When attempting takeover of planets inhabited by such races, a trojan horse attack is possible that permits local access to the MotherShip host, enabling the implantation of executable code with full root access to mission-critical security features of the operating system.
The vulnerability exists in versions of EvilAliens' Alien/OS 34762.12.1 or later, and all versions of Microsoft's Windows/95. CERT advises against initiating further planet takeover actions until patches are available from these vendors. If planet takeover is absolutely necessary, CERT advises that affected sites apply the workarounds as specified below.
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Alien/OS contains a security vulnerability, which strangely enough can be exploited by a primitive race running Windows/95. Although Alien/OS has been extensively field tested over millions of years by EvilAliens, Inc., the bug was only recently discovered during a routine invasion of a backwater planet. EvilAliens notes that the operating system had never before been tested against a race with "such a kick-ass president."
The vulnerability allows the insertion of executable code with root access to key security features of the operating system. In particular, such code can disable the NiftyGreenShield (tm) subsystem, allowing child processes to be terminated by unauthorized users.
Additionally, Alien/OS networking protocols can provide a low-bandwidth covert timing channel to a determined attacker.
Non-privileged primitive users can cause the total destruction of your entire invasion fleet and gain unauthorized access to files.
EvilAliens has supplied a workaround and a patch, as follows:
To prevent unauthorized insertion of executables, install a firewall to selectively vaporize incoming packets that do not contain valid aliens. Also, disable the "Java" option in Netscape.
To eliminate the covert timing channel, remove untrusted hosts from routing tables. As tempting as it is, do not use target species' own satellites against them.
As root, install the "evil" package from the distribution tape.
(Optionally) save a copy of the existing /usr/bin/sendmail and modify its permission to prevent misuse.