Hackers have broken into Zendesk's systems, and accessed the email addresses of Tumblr, Twitter and Pinterest customers who had attempted to get support.
Another rash of account takeovers on the photo-sharing site Pinterest has spilled over onto Twitter and Facebook, as spammers take advantage of linked accounts.
As Pinterest's popularity increases, so do the reports of spam on the fast-growing photo-sharing network.
Is the website doing enough to counter the threat?
Acai Berry diet spammers are hawking miracle diets on Pinterest.
Don't be duped into clicking on the links!
A spammer, who claims to earn $1000 a day by automatically posting affiliate links onto Pinterest from thousands of bot accounts, has given an interview describing his operation.