SAN FRANCISCO (CBS SF) — Multiple accounts of the social networking and media sharing site Pinterest were apparently hacked by a spammer with a fixation on women’s rear ends.

TechCrunch co-editor Alexia Tsotsis reported her Pinterest account was flooded with images of woman’s butts and weight loss ads.

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According to the Better Business Bureau, scammers can insert malicious code into the “Pin This” buttons on other websites or take advantage of security holes in third party apps that connect to Pinterest.

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A Pinterest representative told TechCrunch:

Our systems were alerted to some incidents of spam yesterday evening. These reports did not come in at a large scale. We began working on cleaning up and placing the accounts in safe mode immediately. The accounts have since been secured. As a precaution, Pinners should use unique and strong passwords, and can get more information in our Help Center.

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The BBB recommends, among other tips, to report suspicious pins, and hover over an image to check that the destination link corresponds with what is seen in the image.