Anti-virus firm F-Secure concurred: "Although the software isn't directly malicious, the used rootkit hiding techniques are exactly the same used by malicious software to hide. The DRM software will cause many similar false alarms with all AV software that detect rootkits. ... Thus it is very inappropriate for commercial software to use these techniques." After public pressure, Symantec and other anti-virus vendors included detection for the rootkit in their products as well, and Microsoft announced it would include detection and removal capabilities in its security patches.