25 Percent of All Computers in a Botnet?
Beckham's_Ponytail writes to mention an Ars Technica article, with some disturbing news out of the World Economic Forum in Davos, Switzerland. Vint Cerf, one of the 'fathers of the internet', has stated that the number of botnets online is larger than believed. So large, in fact, that he estimates that at this point one in four computers is infected with botnet software. We've discussed the rise of botnets numerous times here on Slashot, but the image of 150 million infected computers is more than a little bit sobering. With the extremely lucrative activities that can be done with botnets (such as password ripping, spamming, DDoSing), as well as reports of organized crime adopting 'cyber-terrorism' as a new line of income, is it likely that law enforcement will ever be able to curb this particular bane?
One interesting method is to query an anti-spam database using your IP address, and see if you are listed as a spam source. Quick checks can be done at robtex or dnsstuff.
If your IP address shows up on PSBL, CBL, SpamCop, or WPBL your host is probably infected and a source of spam or other abuse.
For Windows, use IE to go to Safety.live.com - Microsoft's official online free spyware, virus detector/remover (choose your language)
There are a bunch of port scanner sites out there that can check the integrity of your firewall. DSL Reports has a decent one if memory serves. Use Spybot Search & Destroy, LavaSoft AdAware and a good antivirus like AVG or Avast. If you suspect that there is unwanted network traffic to and from your system, use Ethereal to see where it is going to and coming from. If you suspect an exploit of Internet Explorer, HijackThis can shed some light on it. Check the task manager process tab for suspicious looking entries and Google them. Lay off the pr0n! and v1agr@ emails.
By far the most powerful and versatile utility is The Geek Down The Street (TM), possibly surpassed by Your Local Computer Repair Shop (TM). Ultimately, there is no replacememnt for smart practices and secure software. Use an alternative browser like Firefox or Opera, or better yet pop on over to http://www.linux.org/dist/ and take your pick.
FairTax baby!