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I use Firefox & I have a couple security add-ons namely Csycon phishing protection & Avira browser safety both of which can recognise sites compromised by malware & various other dodgy stuff, but I got to thinking I'm still doing things from a Windows user's point of view which is something I'm trying to leave behind, so my question is simply this ~ Do I really need add-ons like this in Linux or is it still wise to steer clear of infected sites?
I realise of course that in the case of viruses I am much safer than our Windows friends but are there still things out there that can harm my security which these security measure can protect me from.
Infecting Linux is possible via social engineering, if they tempt you to install something and you fall for it.
I've been using Linux exclusively since 2003, I visit all the sites I want, I open all the email attachments I want. This is the way one should use his/her computer, without fear. I'm behind NAT router, never used a firewall behind router, why put unnecessary load on your hardware.
If these add-ons guard against malware intended for Windows. the kind that some dodgy websites are known to drop, they are likely superfluous in a wholly Linux environment. If they are designed to protect against attacks on the browser itself, there may be some utility in them, though I must say I've not used (nor even heard of) either one.
I second chrism01's recommendation of noscript and echo what Emerson said: Getting entrapped by social engineering or phishing is the bigger danger on Linux. The biggest security threat in any system is PeBCAK (person between chair and keyboard). Noscript and good careful browsing are your best defense.
chrism01 was there meant to have been a link to something in the line ~
Just came across this by coincidence - really good write-up of safe browsing HOWTO : includes recommendations of which tools+addons to use and why(!)
To be honest, if you are an ordinary user you don't need any special security addons for your Firefox. I will give just this two simple advices:
1. Don't browse web and start GUI applications from root. Also if it's possible use https when connecting to web at public networks.
2. Don't post any private information about yourself in social networks and forums. You must understand that in majority of cases user manually upload to web a lot of information about himself and it can be easily found without any hacking.