Office 365 and Exchange Online has a market adoption over 70% in enterprises. An easy way to block cryptolocker viruses that come with mail attachments is to block executable files in Exchange Admin Center. There is no reason to receive executables by email. The solution below will block executables in Exchange environments, including in zipped files. Logon to the Exchange Admin Center: With Exchange 2010 and 2013/2016 go to the URL https://<FQDN of the mailserver>/ecp i.e. https://mail.brankovucinec.com/ecp. In Office 365, go to the admin portal and click Exchange in the…

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