even if these magazines have more pages. The "free" label serves as a dissuading factor in retailers stripping discs and selling them separately. To prevent theft of the discs from the magazine covers, retailers sometimes remove the discs anyway, keeping them behind the counter to be given to a customer upon purchase of the magazine. Problems with covermounted products Software added as covermount to computer magazines may sometimes not be secure. A fast-spreading medium, computer magazines can output over 10,000 discs in a matter of days. In the days before internet connections were commonplace, one of the fastest methods by which a computer virus could spread was to be included inadvertently on a coverdisc. Although discs are thoroughly scanned and carefully assembled, there have been cases of discs being distributed with viruses, damaging the credibility and reputation of the magazine. In several instances where viruses were spread this way, publications expressed that while the contents of the media were scanned by anti-virus software, the virus wasn't detected as the virus was too new. In 1998, cover discs released by both PC PowerPlay and PC Gamer were infected with the Marburg virus, which CNN Money stated caused the malware to become a "widespread threat". A MacAddict cover disc in 2002 contained the AutoStart worm. In addendum to viruses, glitches may be present in cover media that have an adverse effect; In 2004, an issue of PlayStation Underground, a CD-ROM-based magazine, had a glitch where the user's memory card was wiped after executing a demo. See also Disk magazine (a magazine contained entirely on disk rather than a disk attached to a paper magazine) Volume (a jewel case sized music magazine that came with a CD in each issue) References External links Record company representative decries 'covermount culture', 29 June 2007, The Guardian Magazine publishing Software distribution Video game distribution