Currently Being ModeratedApr 8, 2013 4:48 AM (in response to olacar)
CleanMyMac will just add to your problems.
You may find this User Tip on Viruses, Trojan Detection and Removal, as well as general Internet Security and Privacy, useful: The User Tip seeks to offer guidance on the main security threats and how to avoid them.
More useful information can also be found here:
Currently Being ModeratedApr 8, 2013 8:00 AM (in response to olacar)
CleanMyMac isn't an anti-spyware program. It just does things that don't need to be done, and that might cause you problems, as Klaus said. See The myth of the dirty Mac.
As for the issue of whether or not you need anti-virus software of some kind, that's still not a requirement as in Windows. It's definitely possible to protect yourself without anti-virus software, and it's also important to understand that anti-virus software cannot protect you entirely all by itself. Whether or not anti-virus software is important to you is a very personal decision, but should be based on an educated understanding of the risks and how to mitigate them. See the two links that Klaus gave you for more information.
If you do decide to use anti-virus software, the Mac Malware Guide (Klaus' second link) has some recommendations.
Currently Being ModeratedApr 8, 2013 9:20 AM (in response to olacar)
Earlier you always believed that a Mac couldn´t get virus or spyware, but I feel that, that is necessary now
Your signature says your on 10.6.8
OS x 10.6 version market share is currently about 27%, with 10.7 about the same and 10.8 more.
Apple has issued security updates for 10.6 recently and recently installed anti-malware in 10.6.8 and a Safari 5.1.8 update.
So currently Apple has got our backs, and likely will continue to do so as long as 10.6 has a large portion of market share.
When that drops, I advise you install Deep Freeze Mac, this will freeze the machine and any changes are removed upon a reboot. You can have "thawed" areas for user file changes, but if your going to install or remove software or update OS X, you have to unfreeze it first, then freeze it again.
Combined with Firefox which is getting updates for 10.6, plus only using online amounts your willing to risk losing, you should be fine until the machine dies.
If this isn't enough you can always install the free VirtualBox and install a copy of Windows 7 into that, which Virtualbox is getting updates for 10.6 (Fusion and Parallels is not). Windows 7 will get updates until 2020.
So you surf the web with Windows 7 in a window on OS X 10.6 and that way your getting browser updates and being safer than a using outdated 10.6 version online.
I need to update this, but a lot of information is still good.
For Windows malware on files you get in OS X, use the free ClamXav and run it as you need too. Always on third party anti-virus is unnecessary for OS X as Apple already provides it now.
Currently Being ModeratedApr 8, 2013 10:15 AM (in response to Klaus1)
There seems to be a lot of programmes that claims to be helpful malaware programmes, but obviously are the opposite. MacKeeper nearly got me to download and buy things from them, but I changed my mind when I googled them..
Currently Being ModeratedApr 8, 2013 10:55 AM (in response to olacar)
Is that a good anti-spyware programme or do you any others, perhaps even some that are for free?
You never said why you thought it might be time for "anti-spyware" software and spyware doesn't mean the same thing to all people, but you should know that the only way for such things to show up currently on a Mac is for somebody to have physical access to your computer or your network with sharing turned on. There are many other forms of Malware that can impact OS X, but by keeping your system fully up-to-date, you are protected against all known such malware today.
Others have given you great advise on how to deal with this going forward. Just stay current on such advice and don't use your admin password unless you fully understand why and you should be fine.
Currently Being ModeratedApr 8, 2013 12:27 PM (in response to olacar)