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A report that police cameras are shipping with Conficker.B preinstalled is testament to the worm’s relentlessness. It’s also troubling because the cameras can be crucial in criminal trials. If an attorney can prove that a camera is infected with malware, it’s plausible that the vulnerability could be grounds for the video it generated to be thrown out of court, or at least to create reasonable doubt in the minds of jurors. Infected cameras can also infect and badly bog down the networks of police forces, some of which still use outdated computers and ineffective security measures.

Source : Police body cams found pre-installed with notorious Conficker worm | Ars Technica

It doesn’t try to tally the number by querying the individual accounts of all the people who have posted those “Likes.” Since these accounts sit in databases that run on hard disk, that would take too long. Instead, the company keeps a “Like” count for each photo in a single database cell, and it accesses this single cell as needed. “That’s just one disk access of about ten micro-seconds,” says Instagram engineer Lisa Guo.

Facebook a bien racheté des utilisateurs et non une technologie… !

Source : How Instagram Solved Its Justin Bieber Problem | WIRED

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