Trend Micro's redone security suites for 2011 introduce new product names and a new emphasis on cloud-based protection. Trend Micro Titanium Internet Security, Trend Micro Antivirus+, 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. The Titanium Antivirus+ 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 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 $49.95 for one computer.

Titanium Maximum Security retails for $59.95 for one computer. All three are in the mid-range of the cost for their respective feature sets.