In case you weren't concerned enough, Yahoo! reveals another 1 billion accounts compromised

[Windows Central]

Still use Yahoo!? If you value your data at all, you'll stop using the online service right now. Enough is enough.
Not again. 1 billion user accounts have been compromised in yet another security breach at the company. This is on top of the hundreds of millions already affected by previous hacks. What makes this more terrifying is that the breach for this 1 billion account figure was actually back in August 2013.

Full story from the WindowsCentral blog...