ransomware is real , unfortunately, and new variants are in the wold . Google will confirm.
http://researchcenter.paloaltonetwor...ryptowall-2-0/
...Since we detected the first CryptoWall 2.0 variant with our WildFire engine on September 29, we’ve seen over 85,000 separate attacks attempting to deliver the malware. The majority of these have come through e-mails with executable attachments, sometimes contained in .zip files. Most of the e-mail attacks used fake invoice, fax and voicemail themes ...
it would be nice to think that gmail filters this stuff out, but I suspect it can't
Unlike other malware, once it has done its thing and crypro locked all your accessible data, including network, cloud... there is NO recovery you wither pay up or hope you have an offline copy somewhere . the data cannot be unlocked without the crook's private key and it is strong RSA encyption