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Stung by a cyberattack that caused it to issue fake online security certificates for hundreds of companies, the Dutch certificate authority is closing for business.
The hacker who breached security at DigiNotar and caused it to release fake digital certificates is now claiming he can exploit Microsoft's Windows Update to issue fake updates.
GlobalSign, which provides digital certificates used to authenticate Web sites, says it is investigating Iranian hacker's claim that he compromised the company.
Claiming credit for the cyberattack against Dutch certificate company DigiNotar, Comodohacker is threatening to release other fake certificates.