Fifty-one million iMesh accounts are for sale on Dark Web for $700, bringing the number of user accounts tied to recent breaches to over 700 million.

Roughly 320,000 Time Warner Cable customers are being told to change their email passwords this week after the company announced Wednesday that hackers may have gained access to them. The move comes after the F.B.I. notified the telecommunications giant that someone may have gained access to TWC customer information. It’s still unclear exactly how someone may have...