Trend Micro redone security suites for 2011 introduce new names for their products and a new emphasis on cloud-based protection. Trend Micro Antivirus+, Trend Micro Titanium Internet Security, and Trend Micro Maximum Security include the overhauled cloud-based Smart Protection Network proprietary engine to protect against viruses, malware, phishing attacks, and other threats.

The suites are notable for the heavy reliance on cloud-based technology and Trend Micro's emphasis on its Smart Scan tech. According to the company, this works by constantly scanning for threats when connected to the Internet, and utilizing locally-cached databases when working offline. The offline database includes protections against viruses and malware that are known to spread by USB keys.

Unlike many of its competitors, Trend Micro does not offer a firewall component, instead relying on the default Windows firewall.

The products differ similarly to many of Trend Micro's competitors. Trend Micro Titanium Antivirus+ 2011 program offers the most basic protection, including antivirus and anti-malware guards, drive-by download protection, and the ability to block links to malicious sites and downloads in instant messages and e-mails. It retails for $39.95 for one PC.

Trend Micro Titanium Internet Security 2011 protects against the same as Titanium Antivirus+, as well as offering protection against unauthorized changes to your already-installed programs, spam blocking, Windows firewall optimization, parental controls and data theft guards. It retails for $69.95 for one computer.

Trend Micro Titanium Maximum Security 2011 includes the same as Titanium Internet Security, in addition to Wi-Fi hotspot authentication, Department of Defense-rated file shredding, remote locking of files and folders in case of theft, a system optimizer, and 10 GB of online backup. Titanium Maximum Security retails for $79.95 for one computer.

While Titanium Antivirus+ is in the mid-range for its category, Titanium Internet Security 2011 and Titanium Maximum Security 2011 are at the high end for their respective feature sets.

Correction: Pricing information has been corrected from an earlier version of this story.