What is a Bot? Bots are malicious software programs downloaded unknowingly onto your PC. They enable cybercriminals to control your PC to distribute spam, phishing scams, spyware, and malware—all without your knowledge. A botnet is a collection of bot-infected PCs. Bot herders, those who control botnets, are able to harness the power of thousands of PCs, often renting their botnets to other criminals.

Some of today’s larger botnets include Kraken, Mega-D and Storm. Each contain thousands upon thousands of bots and are capable of sending millions of spam per day.

Why should you care?

Your PC could be used to send spam, adult content and malware.

How to Protect Yourself

Keep your PC current with the latest software updates and patches.

• Apply the latest security updates and patches to your software programs and operating systems and enable automatic updates where possible. Since cybercriminals typically take advantage of flaws in the software to plant malware on your PC, keeping your software current will minimize your exposure to vulnerabilities.

Protect your PC with security software.

• Install an Internet security suite like Trend Micro™ Internet Security that includes spam filtering and blocking as well as anti-malware and anti-spyware capabilities. Keep security software up-to-date.
• Use a free tool, such as RUBotted or Web Protection Add-On, which can alert you to bot infiltration and help protect you from web threats.

Protect yourself and your PC

• Beware of unexpected or strange-looking emails and instant messages (IMs) regardless of sender. Never open attachments or click on links in these emails and IMs. If you trust the sender, scan the attachments before opening.
• Beware of web pages requiring software installation. Scan programs before executing. Always read the end user license agreement and cancel if you notice other programs being downloaded in conjunction with the desired program.