What is Malware? Malware is a category of malicious software programs that includes viruses, worms and Trojans. Malware spreads via email, the Web, and devices like USB drives. Different malware file components are often used together to create blended – and effective – Web threats. Viruses have the unique ability to replicate, and like biological viruses, can spread quickly. Viruses typically damage your PC by reformatting your hard drive or corrupting files.

Worms spread copies of themselves via email and instant message attachments, and harm networks by consuming bandwidth.

Trojans perform malicious actions but have no replication abilities. Like the original Trojan horse, these programs may arrive as a seemingly harmless file or application but actually have malicious intent within their code.

Why should you care?

Malware can compromise your PC security and put your personal identity and information at risk.

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.
• Scan your PC with a free tool such as HouseCall to see whether you have been infected.

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.