2 Billion Email Addresses Were Exposed, and We Indexed Them All in Have I Been Pwned

I hate hyperbolic news headlines about data breaches, but for the "2 Billion Email Addresses" headline to be hyperbolic, it'd need to be exaggerated or overstated - and it isn't. It's rounded up from the more precise number of 1,957,476,021 unique email addresses, but other than that,

Troy Hunt
Microsoft takes pains to obscure role in 0-days that caused email breach

Critics also decry Microsoft's "pay-to-play" monitoring that detected intrusions.

Ars Technica