You can't check for viruses without having software to do it with.
If you feel the need for virus checking software, you can download ClamX AV for free. I've been running AntiVirus software on my mac for 15 years and have never found a virus or trojan. I do have ClamX installed. In reality, virus sofware for macs has done more harm than good.
But if you are careless on where you go on the internet and download a lot of 3 party software from unknown sites, you may want to look into installing an AV program. Just be very careful on which you choose. Like I said, most do more harm than good.
Welcome to Mac. As Glenn suggested there are numerous AV programs for the Mac. Something to remember, coming from Windows there is less concern for virus, trojans, malware in general. That is not saying there is not Mac malware. Also, to monitor our systems Apple uses Gatekeeper. You can read about it in the following links:
- http://www.smh.com.au/digital-life/consumer-security/apple-upgrade-provides-anti virus-protection-20120802-23gs7.html#ixzz2ymwE9Xcn
- http://blog.trendmicro.com/trendlabs-security-intelligence/gatekeeper-on-mac-os- x-10-9-mavericks/
In addition to free ClamX AV, here are two possibly better programs Sophos, and Avast, both receive high ratings, yes both are free.
Here is what I find strange, quote "…I do not want to buy a software that does this for me, but i just want to reassure my self that my $1300 investment is safe!…". Hum, you pay $1,300 for a wonderful laptop with the desire to keep it safe, yet you are adverse to spending less than .05% that cost for an anti malware program. Sorry, I do not get that logic.
Any of the aforementioned free AV programs will serve your needs quite well. Hope that helps.
Finally found where I tripped up: doing precisely a few days ago what you advised strongly against:
"Do not trust an alert from any website to update Flash"
Updated flash and now being told on all 3 browsers that all browser versions (including those I don't have even installed - Explorer - are old versions and need updating.
It's preventing access to certain websites such as facebook and introducing lots of very unMac like behaviour onto the browser screens.
Having been using mac since my first Powerbook 170, I never thought I'd see this on a mac platform.
Any advice as to what the medicine is would be much appreciated.
Software from an untrustworthy source
- Software of any kind is distributed via BitTorrent. or Usenet, or on a website that also distributes pirated music or movies.
- Software with a corporate brand, such as Adobe Flash Player, doesn't come directly from the developer’s website. Do not trust an alert from any website to update Flash, your browser, or anything else.
The Safe Mac site that others have already mentioned, the author has recently posted an adware removal tool that you might find useful.
Please note that it is Beta, so please backup first before using it. (I have personally tested it on my system will no ill effects)
Several Anti-Virus programs have been mentioned here. The two main ones Clam X and Avast.
I am not familiar with Clam X but I did at one point after a scare download Avast.
If you have limited band width I don't recommend it. My data more then doubled in the month I had it active. It cost me big time as I had gone over my limit. I had downloaded it at the Library so the initial install wasn't the issue. Avast's updates were the issue. Plus, it slowed down my Mac Book Pro considerably. Once I removed Avast my data usage and speeds returned to normal.
I keep receiving this warning on my computer. It started about 2 weeks ago after I upgraded to Yosemite. This window pops up even when I'm not connected to the internet and when browsers are not even open. It interrupts me when doing anything from typing in word to watching a movie from a file on my computer. It won't let me do anything on my MacBook without clicking OK to dismiss it and then it pops up an hour later. It pops up right away when I restart my computer.
Another forum told me the only way to fix it was to upgrade Java. This is something I tried initially, but it only made the issue worse.
I did not know how useless it was when I upgraded it and I have uninstalled from my computer since. Now I have java blocked on all my web browsers with the exception of java script. I have my settings so that Java script is allowed, but all Java plug-ins are blocked. I am STILL getting this pop-up. Help me please!!
Does anyone know how I can get rid of this? The only solution I have left is to wipe my computer and re-install everything. I do back up very regularly, so this isn't the most terrible thing. I am worried that I will re-install or put the issue back on my computer.