A Russian bank says a cyber attack it sustained "may" have come from Ukraine. The Russian government sends a message by ditching iPads for Samsung tablets (on "security grounds," but as Pravda used to say, it is no accident that such grounds surfaced during increased Russo-US tensions).

An SMS exploit in Israel is tentatively tracted to Islamist hacktivism. South Korea's NAVER portal suffers a data breach.

Windows XP begins its afterlife next week. Observers predict a "wild west" of zero-days (and you didn't have to be Nostradamus to foretell that, since it's already begun in the ATM space).

China and the US continue to glare at one another over allegations of US hacking of Huawei. At least one prominent observer, Richard Clarke, thinks China's reaction is like Captain Renault's in "Casablanca": shocked, shocked, to learn that spying is going on.

Defense News thinks, correctly, that the defense industry could learn a lot about cyber security from the financial sector. Specifically, it could learn the value of threat information sharing and collaborative defense (even among competitors).

Nature publishes some basic science on the physical limits of privacy.

Turkey is ready to reopen Twitter, but late-breaking tweets say the government is about to close YouTube. Still developing.

Editorialists comment on proposed US surveillance reforms.

CSO says it's a "wake-up call," and they're right: Trustmark National Bank and Green Bank N.A. sued Target and its security assessor Trustwave in Federal court Monday, accusing them of negligence in this past winter's big data breach.