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Showing posts with label WWW. Show all posts
Showing posts with label WWW. Show all posts

Monday, October 13, 2008

Norton Safe Web

How do you know when you’re visiting a safe Web site?
Attractive site design and the appearance of legitimacy can simply
disguise a site that aims to steal your identity, co-opt your computer
to spam others, or simply take your hard-earned cash.
That’s
why Norton Safe Web is one of our most exciting new beta projects. It
is a new Web safety solution based on Symantec's automated analysis of
Web sites in order to determine their potential impact on you and your
computer.
The Norton Safe Web beta makes it easy for
you to differentiate safe sites from malicious ones by providing visual
site ratings within everyday search results from top search sites like
Google, Yahoo! and Live Search. Additionally, due to the nature of
security threats on the Web, Norton Safe Web will also warn you before
you visit a site that contains malicious content.




Accessible
from the Norton Internet Security 2009 Norton Toolbar installed on your
PC, once you download the Norton Safe Web beta plug-in, we let you know
how safe a particular Web site might be before you view it. If you need
to find out more about how a Web site might behave, we provide more
detailed information on the Norton Safe Web Report.



The
Norton Safe Web Beta is available exclusively to Norton Internet
Security 2009 users
who want to experience the latest solution against
online threats. If you are ready to install the Norton Safe Web plug-in
now, please click here. . If you do not have Norton Internet Security 2009, you may purchase a subscription at http://shop.symantecstore.com/store/symnahho/en_US/DisplayProductDetailsPage/ThemeID.106300/productID.105548000.

Sunday, October 12, 2008

Web Security Guard

Source
Are the websites you visit safe? Do you know which search results are dangerous? If you don't, Web Security Guard does!
Install Web Security Guard and get free protection against adware, spyware and data loss!
Web Security Guard warns you before you access a dangerous website, so you can prevent infection of your computer and invasion of your privacy.
Features
  • Safe Browsing
  • Spyware, Adware, Virus & Spam Prevention
  • Safe Search
  • Website Rating
  • Automatic Updates
  • On Demand Database Update
  • Customizable Website Classification
Just found this while doing some rogue site investigating. Going to install it on test box to see how it fares.

Rating categories:
  • Safe
  • Adware, spyware, viruses
  • Spam
  • Phishing & scams website
  • Advertising networks
  • Warez & Illegal content
  • Pornography
  • Pop up flood

I see it's pulling resources from:
  • antiphishing.org
  • stopbadware.org
  • phishtank.com

0-= Web Security Guard

SiteAdvisor-SiteHound-WebOfTrust-AdblockPlus

Source -by Donna
Thanks, Donna!
I thought to bump this thread because it's been months and I'm still not
convince to install on my non-test machine the SiteAdvisor.
Today, I did another run with it in test XP Pro system and ugh....
Rogue/bad site: antivirus0003.com
SiteAdvisor did not block the page (even if the bad domain has been reported to them)
Attached Image

SiteHound, Web of Trust, Adblock Plus will block it and of course, the IP blocklist and Hosts file will drop the connection:
Attached Image

Attached Image

Attached Image
Attached Image
So I'm sticking with the browser security add-ons by keeping (still) the following:
1. SiteHound, Web of Trust (they work along) in Firefox
2. Adblock plus then subscribe to block filters
3. NoScript
4. Hosts file
Since Outpost IP Blocklist will block what's on my blocklist (whatever browser I will use)... it's 'activated' in firewall.
I am not using Dr.Web link scanner at the moment. No reason other than I have no time to play with it again in new builds of browser.
At times, I'm using Sandboxie (if I am going to play with a site or link) but often Disk Protection by Windows SteadyState is "on" so whenever I'm done browsing or playing with files or sites, everything is trashed by SteadyState on restart or on schedule.
While we're talking about browser security add-on, I thought I mention also that those fast browser security add-ons are a good help to users to avoid infection while browsing.
An example:
Search using keyword "VIPRE antivirus + antispyware" in the search bar of the browser:
This site will redirect the user to a rogue domain that will autodownload rogue installer e.g. xp-cleaner
Attached Image

If Web Of Trust is installed, it will show 'red' status which means the WOT user should NOT visit the link:
Attached Image
SiteAdvisor's rating icon is 'untested' which means users should think twice, thrice whether the site is good or bad. Since it's untested, user of SA should be very careful because it's not known
to SiteAdvisor yet:
Attached Image
Let's hope SiteHound will have rating icon/alert on link also for search engines so SH users will have extra protection on bad links in search results.

McAfee SiteAdvisor

Source Source2
Protección de mensajes y sistemas McAfee
Navegación libre de preocupaciones para los usuarios de la empresa

Siéntase seguro usando Internet como un valioso recurso de su empresa. Con McAfee® SiteAdvisor™ Enterprise, puede navegar y buscar en la web de forma segura y mantenerse alejado de amenazas como programas espía, programas publicitarios, timos de phishing, etc. Añada otra capa de protección a la vez que educa a los usuarios acerca de los peligros de navegar por Internet.

Ventajas:

  • Una medida de protección adicional
    Proteja a sus empleados y a su empresa contra el software dañino basado en la web como el software publicitario, el software espía, los virus y las estafas por robo de identidad; convierta las búsquedas y la navegación por la web en una actividad más segura
  • Está listo para la empresa
    SiteAdvisor Enterprise es fácil de implantar en toda su organización con McAfee® ePolicy Orchestrator®, que también le indica qué equipos tienen instalado SiteAdvisor Enterprise.
  • Búsqueda sin complicaciones
    No se meta involuntariamente en territorio peligroso cuando haga búsquedas con Google™ o Yahoo! ®, MSN®, AOL® o Ask.com™, obtendrá una valoración de seguridad al lado del resultado de la búsqueda
  • Navegue con seguridad
    Nuestro sistema de valoración basado en códigos de colores le permite saber qué sitios son seguros y cuáles son peligrosos; fíese de SiteAdvisor Enterprise para saber si el sitio que está explorando está libre de amenazas
  • Esté avisado de antemano
    Los avisos por adelantado le informan acerca de los sitios web dañinos, de modo que evitará correr riesgos innecesarios

Características:
Valoraciones basadas en códigos de colores

Unas sencillas señales verdes, amarillas y rojas le alertan de
posibles amenazas en las páginas que visite; nuestros probadores
automáticos patrullan continuamente la web y cambian el color basándose
en los resultados







Amplias pruebas del sitio

SiteAdvisor Enterprise prueba los sitios para detectar un
número excesivo de menús emergentes, prácticas fraudulentas y
aprovechamiento de debilidades, como el software publicitario y el
software espía, así como enlaces ocultos a otros sitios web dañinos
Sepa todos los detalles

Con sólo un clic obtendrá un perfil de amenazas completo de
cada sitio, incluida información acerca de cuántos correos electrónicos
recibirá al mes si se registra, críticas de usuarios y molestias
Admite varios navegadores

Utilícelo como complemento de los navegadores Microsoft® Internet Explorer o Mozilla® Firefox®



Cuando se hace una búsqueda con Google, Yahoo! o MSN, las restricciones de seguridad de SiteAdvisor aparecen junto a los resultados de la búsqueda.


Mientras navega, un pequeño botón de la barra de herramientas del navegador cambia de color según los resultados de seguridad de SiteAdvisor.

Las opciones de menú de la barra de herramientas de SiteAdvisor permiten personalizar SiteAdvisor o ver los resultados detallados de la prueba de un sitio.

Los resultados detallados de las pruebas de cada sitio están tan sólo a un clic. (Ver ejemplo)

Thursday, October 9, 2008

SiteHound

Sitehound box small gifSiteHound protects you and your computer from phishing, scams, spyware, adware, security risks, viruses and objectionable content while you surf the web. Free version for Internet Explorer and Firefox.

AWARD WINNING PROTECTION WHILE YOU USE THE INTERNET
SiteHound is a toolbar for Microsoft Internet Explorer and Mozilla Firefox which alerts you if you're about to enter a potentially dangerous website.

Today the most common route for attacks on your computer is through
your web browser as you surf the web. Everyday, people around the world
fall victim to online fraud, scams, security vulnerabilities and
malware while surfing the web, and most people realise before its too
late.


SiteHound solves this alarming security gap by working with some of the world’s leading security watchdogs to provide you with instant and real-time protection for you as you surf the web.

Leer Más Download

Wednesday, October 8, 2008

Security software

Source
Security Software categories:
  1. Anti-Virus
  2. Anti-Trojan
  3. Anti-Spyware/Malware
  4. Firewall
  5. SandBox/application monitoring (HIPS)
  6. Process related (process to port mapping)

  Other security softwares
  Conclusion

The purpose of this page is to give you an example of a complete set of security softwares, to give you an idea as to how to secure you.
Ok. let's start, i assume that if you have reached this point, you have already read and applied windows security tips given in the advices area.

Main security software categories for home user :
  * Anti-Virus
  * Anti-Trojan
  * Anti-Spyware/Malware
  * Firewall
  * SandBox/application monitoring (HIPS)
  * Process related (process protection, process to port mapping)

Additional security software categories i won't talk about :
  * Data Encryption (Files, network)
  * Privacy management

(there are more, but i want to focus on the main ones. I know some could say that to talk about a minimum security to have without talking about privacy is idiot, but if you follow the software set above, your privacy will be indirectly safe, of course you can still add privacy related softwares.)

1 - ANTI-VIRUS Probably with the Firewall categorie one of the most controversed topic, about which is good and which not, and why. I just recall to the reader that i give an example, a good one, but not necessarely the best.
Their are so much viruses/worms in the wild that an AV is absolutly needed nowadays, it's a bare minimum to have. I have tested Kasperky, NOD32, Norton, and AVG.
If you want to check an independant AV testing website, check out
http://www.av-comparatives.org


I advise NOD32, or KAV 6.0
NOD32 has one of the best Heuristic module, which means that it performs very good at detecting unknown viruses, not yet added in any AV signatures base. It is also very light on ressources.
NOD32 : http://www.nod32.com/download/trial.htm


KAV 6.0 has probably one of the best detection rate (known viruses), and Kaspersky Lab is very quick at submiting new AV signatures when new viruses/worms are detected in the wild.
(KInternetSecurity 6.0 has the same GUI than KAntiVirus 6.0)
Moreover, KAV 6.0 includes the firewall leak tester awarded 'Proactive Defense' technology (that you can choose to not install if you wish installing the AV part only).
KIS & KAV 6.0 : http://www.kaspersky.com/

2 - ANTI-TROJAN Trojans can be more dangerous than a virus, while this one can destroy your files or altered them, a trojan can give a full access to a remote intruder who can do what he wants on your computer, in fact, he can do all you can do, he can find all your private and sensitive information.
In the worst case, you computer can be turned in a "zombie", attacking target without your knowledge (e.g. Microsoft), and only making you visible (appear as the attacker) hiding the true one, the cracker.

I advise
Ewido
Ewido 4.0 is in beta stage for now...
Ewido is now part of the AVG Technologies family of world-class
Anti-Virus and Internet Security products. ewido users will benefit
from AVG's comprehensive threat research and support resources.
Look for more on AVG:
AVG Internet Security
Anti-Virus, Anti-Spyware, Anti-Spam, Web Protection & Firewall
Comprehensive protection for your computer! AVG ensures your safety
while you search or surf the net, download music, documents and
pictures, send emails or instant message by scanning documents, files,
Web pages and Web links before you open them. AVG Internet Security is
a reliable and easy-to-use solution for home and small office users.
Unique Internet security thanks to new technologyOnly AVG gives you real-time protection against malicious websites thanks to our new LinkScanner technology.

There is still techniques from the malware side to try fighting generic unpacking and emulation, if this subject interest you, you can read the following article :
http://scheinsicherheit.pytalhost.de/decompdelay.htm

3 - ANTI-SPYWARE/MALWARE Spywares are a recent annoying kind of threat, their purpose is to advertise you, by all the way possible (to make you go on a website, about different subjects, to the most simple like to buy a car, to the worst like porn website, a threat for your childs). To do that, they show you popups, redirect your surfing at an unexpected website, hijack your softwares (mainly your browser, mail client, instant messaging client), and write registry entries.
All of that leads often to privacy leaks (retrieve information about you to the authors) system stress (CPU & Memory consumption), and surfing/playing annoyances (bandwitdh consumption).

The two most well known Anti-Spyware are SpyBot and Ad-Aware.
I talk about "Spybot S&D 1.4".
Spybot is well known on the anti-spyware scene, and does it's job very well.
Spybot provides an-demand scanner, and a resident protection called "tea-timer".
One interesting feature is the IE "Immunization", described in the help file :

The permanent immunity works on some Internet Explorer control options that are partly visible in the Internet Explorer interface, partly hidden in the registry only. It adds domains known to contain bad contents into the Restricted Zone, thus blocking installation of executable code from those pages; it also adds block options for bad executable code by its ID, and it sets known tracking cookies to not be accepted by Internet Explorer.

To cut it short: it modifies Internet Explorer, through official ways, to block a lot of the bad stuff known to Spybot-S&D.
Download link:

safer-networking.org

4 - FIREWALL Ouch, the hot topic.
A "firewall" is not the same thing for everyone, so hard to tell you "the best" (i can't).
A basic firewall, as it used to be, is a vanilla packet filter, which mean that it checks rules (ip adresses, ports, protocols) and allows traffic or drop it. Nowadays, Windows home users needs have evolved, and so, firewalls too. Now, their are firewalls which handles websites cookies, emails spam, websites popups, bandwitdh throttler, port to process mapper, and most include outbound application filtering (their are other features like plugins, etc...)
Because everyone's needs is different, a "best" firewall can't be chose.

Note : on this website i'm talking about leaktests, so about outbound application filtering. Thus, the "score board" does not show good and bad firewalls, only good and bad outbound application filtering (a firewall is more than that, but it's an important part ).

I will talk about firewalls like softwares able to allow/block inbound/outbound network traffic, and have an outbound application filtering.

i advise "Look'n'Stop 2.05".
(their are a lot more like ZoneAlarm, Outpost, etc...)



LNS uses very little ressources, what it mean that it won't slow down your computer or your surfing.
It has the application filtering (one of the best) and the network filtering splitted, which mean that someone behind a NAT router (with a firewall integrated and well configured) can only use the application filtering without to bother to deal with the network filtering (that he can disabled).
For others without routers, LNS provides you preconfigured set of rules to avoid you to waste time to setting it up.
Their are advanced rules to really make you invisible to scans.
If you are concerned by web's threat management by your "firewall", norton could be good despite of his bad application filtering and his "ressource hogger" behaviour.
Look'n'Stop website

5 - APPLICATION MONITORING This approach is very interesting and very effective, if you can't fight all known and unknown threats, the most effective is to prevent threats to load, simply.
Because basically even the most sophisticated threat is just an executable, monitoring executables launching on his system is a strong additional layer of security.
A real "SandBox" software (or HIPS, stands for Host Intrusion Prevention System) will write a list of trusted executables (BlakIce for instance checks all your system executables to the setup) and will block the launch of any other applications.

I advise Ghost Security Suite 1.110 from Ghost Security

Also take a look at the
firewall leak tester awarded 'Proactive Defense' technology, part of KAV6 and KIS6.



Ghost Security Suite includes two softwares in one, AppDefend & RegDefend. You can choose to buy or install either part alone, you are not required to install the suite.

RegDefend is a kernel registry protector, it intercepts read/write access to the registry and allow/block/ask depending of the settings. It can so prevent a malware from writing an entry in the "Run" registry key, thus preventing it to automatically run at each startup. Registry parts to monitor are completely customisable.

AppDefend is a "sandbox" or HIPS software, it is a system monitoring software, allowing the user to watch application activities, and to allow or block what he wants to. From AppDefend forum, below are the threats that AppDefend protects against :
Network access, Process creation, Process execution, Global Hooks (DLL injection / Keyloggers), Process/Thread suspension and context modification, Virtual Memory modification, Remote Thread Creation, Physical Memory access, Termination of threads and processes, Rootkit installation methods.

The Proactive Defense included in KAV 6.0 or KIS 6.0 can globally do the same, except for process termination. On the other side, the Proactive Defense can detect invisible processes, hidden from the task manager by a rootkit driver. Both products have overlaps, but also have complementary features.
By configuring both correctly, it is possible to run them concurrently, and to gain a very strong security layer.
Download links :
Ghost Security Suite
Kaspèrsky AntiVirus

6 - PROCESS RELATED In this area, i will talk about 1 kind of software :
* process to port mapping
The "process to port mapping" means that you can trace which process is using which port, which protocol, is connected to which IP adress, etc...
By being able to see your system connections states, you are able to detect by yourself trojans, spywares, or worms.
Because sometimes you can allow a software to run, and then allow it to connect to the internet to do one action, but because sometimes you are not sure if you can totally trust it, with a process to port mapper you can see excatly what it does.

There are several process to port mapper out there, not one relying on the same method to detect _accuratly_ processes and ports, some are slow, others innacurate.
The best i have ever seen is "Port Explorer" 1.800 from DiamondCS.



This security software provides usefull tools to analyse processes and their network's connections. You can choose one line and to terminate the process, or let it alive but preventing it just to send data (but letting it to receive), or preventing it to send and/or received data, you can spy what a process send/received with a built in packet sniffer, you can restrict bandwitdh a process can use (for instance block it to 5Kb/s max), and you can do many other things like whois/lookup etc...
An intesresting feature is that Port Explorer will let you see possible suspicious processes by highliting them in red, such processes have one or many sockets belonging to them, but hasn't any windows displayed (like trojans does). Of course a simple Instant messaging minimized to the systray will be in this case, but a trojan too... it allows you to quickly see suspicious processes.
At the end, the display is totally customizable, you can choose all colours, and choose your language between : Dutch, English, French, German, Italian, Portuguese, Spannish, and Sweddish.
To test it or buy it

Other security softwares :

With such softwares installed and _properly configured_ your computer is turned on a heavy fortress. Of course it asks time, personal investigation, and money... but these softwares really worth it, atleast try them.

For those who want more choice, as a quick example, an other software set could be : Kaspersky, BoClean, Spybot, Outpost, Abstrusion protector, Port Explorer, ProcessGuard, even if there is in this list softwares that don't have all the features of those i chose.

You can try to improve even more your security by doing data encryption or by adding specialized privacy related softwares, but i stop here because all software shown are sufficient to provide you a strong security.

Conclusion :
If everyone was educated to the security, worms and viruses would fall down in the dark and we would never anymore heard of them.
It has nothing to do with "IQ", but with education, you don't know that you have to do something until you learn it from your mistakes, or from someone else.
I know, sadly, a lot of friends who never update Windows and doesn't have any security related softwares, sometimes just an Anti-Virus outdated, don't wonder how worms can spread around the world, it's all about education.

After many years of studying security, I have noticed that threats level has "jumped" when the Internet has became ordinary at home, when high bandwidth connections started to be available at low prices for everyone, when it has became a fashion.
Which wasn't important before that, all security stuff, is nowadays a must to have.
For proof, just format and install Windows, connect to the internet, and you will be infected by a worm in 10s or less, it would have sounds unbelievable there are few years.
The internet isn't anymore a game place where you can go on gaming sites, forums, looking at beautifull wallpapers, and listen music and enjoy with all entertainments... users have now to understand real risks they can encounter, they have to bother with security (i say "bother" because i know people not enthousiasm to do that) _before_ their personal entertainments.

So, keep using best guidances, install a security software suite and understand it, keep going on security forum to be aware of lastest threats, and you will see that to have a safe computer never hurted by malicious threats is possible, but only possible if you want it.

Tuesday, October 7, 2008

Internet Security Software

The best compilation! Thanks to firewallguide.com!

Patches, Updates & Service Packs

Anti-Malware
Internet
Communication
  • Email Client --
    Try
    Thunderbird with anti-spam and anti-phishing as an alternative to Outlook Express.
  • Email Encryption -- Try
    the Hush Mail email service.
  • Instant Messaging Security -- Try
    IMSecure

Saturday, October 4, 2008

M$ user agents strings and the others

Source (modified)

What did this study conclude?

  • First, lots of users are not running the most up-to-date and secure versions of their Web browsers.
  • Second, this is primarily a phenomenon of Internet Explorer users;
But note that the build data and Gecko version on Firefox give you a lot more version information about Firefox than you get about Internet Explorer. For IE, all you get is major version information, i.e. IE5, IE6, IE7, IE8. The study authors note this themselves:
The USER-AGENT header fields for Firefox, Safari, and Opera contain both major and minor version information, whereas Internet Explorer only contains the major version. Therefore, it was not possible to enumerate the patch level of Microsoft Internet Explorer using this method beyond its major release numbers.
After (in this case flock1.2)

Security: the Web browser threat

the "insecurity iceberg"
Attacks against Web browsers depend upon malicious content being rendered by the appropriate built-in interpreter (e.g., HTML, JavaScript, CSS, etc.) or vulnerable plug-in technology (e.g., Flash, QuickTime, Java, etc.) [1, 2]. Vulnerabilities lying within these rendering technologies are then exposed to any exploit techniques or malicious code developed by the attacker. Vulnerability trend reports have indicated that remotely exploitable vulnerabilities have been increasing since the year 2000 and reached 89.4% of vulnerabilities reported in 2007 [3]. A growing percentage of these remotely exploitable vulnerabilities are associated with Web browsers.

Profit motivated cyber-criminals have rapidly adopted Web browser exploitation as a key vector for malware installation. Due to the methodology of exploiting Web browser vulnerabilities and the unpredictable browsing patterns of typical users, for widespread infection of vulnerable hosts the criminals must seed a mix of popular and high-traffic websites, or incentivize users through email spam, with URLs directing potential victims to Web servers hosting their malicious content. The former method is commonly known as drive-by download, where drive-by refers to the fact that Web browsers must initially navigate to a malicious page and download refers to the covertly downloaded and executed malware - typically trojans.

Read more...

Figure 1: The Web browser Insecurity Iceberg represents the number of Internet users at risk because they don’t use the latest most secure Web browsers and plug-ins to surf the Web. This paper has quantified the visible portion of the Insecurity Iceberg (above the waterline) using passive evaluation techniques - which amounted to more than 600 million users at risk not running the latest most secureWeb browser version in June 2008..

Domain Name System: ODS

The Domain Name System (DNS) is a hierarchical naming system for computers, services, or any resource participating in the Internet. It associates various information with domain names assigned to such participants. Most importantly, it translates humanly meaningful domain names to the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices world-wide.
An often used analogy to explain the Domain Name System is that it serves as the "phone book" for the Internet by translating human-friendly computer hostnames into IP addresses. For example, www.example.com translates to 208.77.188.166.
The Domain Name System makes it possible to assign domain names to groups of Internet users in a meaningful way, independent of each user's physical location. Because of this, World-Wide Web (WWW) hyperlinks and Internet contact information can remain consistent and constant even if the current Internet routing arrangements change or the participant uses a mobile device. Internet domain names are easier to remember than IP addresses such as 208.77.188.166(IPv4) or 2001:db8:1f70::999:de8:7648:6e8 (IPv6). People take advantage of this when they recite meaningful URLs and e-mail addresses without having to know how the machine will actually locate them.
The Domain Name System distributes the responsibility for assigning domain names and mapping them to Internet Protocol (IP) networks by designating authoritative name servers for each domain to keep track of their own changes, avoiding the need for a central register to be continually consulted and updated.
In general, the Domain Name System also stores other types of information, such as the list of mail servers that accept email for a given Internet domain. By providing a world-wide, distributed keyword-based redirection service, the Domain Name System is an essential component of the functionality of the Internet.

Other identifiers such as RFID tags, UPC codes, International characters in email addresses and host names, and a variety of other identifiers could all potentially utilize DNS [1].

The Domain Name System also defines the technical underpinnings of the functionality of this database service. For this purpose it defines the DNS protocol, a detailed specification of the data structures and communication exchanges used in DNS, as part of the Internet Protocol Suite (TCP/IP). The context of the DNS within the Internet protocols may be seen in the following diagram. The DNS protocol was developed and defined in the early 1980's and published by the Internet Engineering Task Force.

A DNS recursor consults three nameservers to resolve the address www.wikipedia.org.
A DNS recursor consults three nameservers to resolve the address www.wikipedia.org. (Click on image)
---------------------------------------------------------
ODS.org If you're looking to host a website, ftp, irc, or email server but have a dynamic IP, you've come to the right place. Open Domain Server offers very low cost dynamic name server resolution for a number
of public domains.

Tuesday, September 30, 2008

The safest browser in Windows

"Browsers are as good as their users"

The browser is only as safe as the user who use adecuately all the possible security mechanismus of the browser!

Firefox can be very unsafe if someone (who doesnt know anything) does not configure it.


Opera performed better when tried/tested by visiting the "Darkest side of the Net":
i.e. heavily infected Russian, Chinese, XXX sites, etc.
And the rest of browsers: Crashed or frozen.
Special security add-ons as NoScript, AdBlock/Plus, etc. make Firefox the safest browser.
Under Linux and other GNU/Unix variants (all BSDs or perhaps OSX) and their browsers you can explore the web without the typical viral problems of the MS world!