Diseases, Conditions, Syndromes

Global virus deaths pass 650,000 as new surges prompt fresh curbs

Officials around the world reintroduced a raft of restrictions Monday—from beach closures to quarantine measures—to try to tamp down coronavirus hotspots as the official global death toll passed 650,000.

Diseases, Conditions, Syndromes

UK begins testing a new app to fight COVID-19 spread

Britain started testing a new smartphone app Thursday to help people find out whether they've been close to someone infected with COVID-19 after security concerns torpedoed an earlier effort to use technology to track the ...

Security

Security is the degree of protection against danger, loss, and criminals.

Security has to be compared and contrasted with other related concepts: Safety, continuity, reliability. The key difference between security and reliability is that security must take into account the actions of people attempting to cause destruction.

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