As if Microsoft hasn’t got it’s hands full enough with security breaches in it’s software aiding the Chinese in attacks on US companies, it has now been implicated in DoS attacks on the Perl CPAN testers’ system of sites, databases and mirrors. The problem appears to be that Microsoft’s bots do not adhere to the robots.txt files on servers which indicated what can ( and can’t ) be scanned. I can attest to these issues as my own stats indicate very heavy bot activity from Microsoft compared to Google and other companies.