Meanwhile, advances in machine learning have allowed Facebook "to find more suspicious behaviors without assessing the content itself" to block millions of fake account creations per day "before they can do any harm," says Chakrabarti.
Airport directors say more people are reporting suspicious behavior among other passengers.
"There's more police assigned to a place like East New York than, say, a precinct in Riverdale," said the Police Department spokesman, Paul J. Browne, "so the police are going to be in a position to observe suspicious behavior more frequently".
But the two cases share a common, troubling thread: neighbors, police officers, and even the medical establishment may be more likely to overlook glaringly suspicious behavior when the perpetrator of that behavior is a woman.
These reports should not be limited to an incident only, customers may also use this mechanism to announce a suspicious behavior for more analysis.
Mr. Schlanger recommended that guards be taught how to ask more probing questions of passengers and to watch for suspicious behavior.
"This more negative moral impression led people to rate ambiguous behavior by another organization member as more suspicious – even when the prior transgression was purely self-serving," wrote Sawaoka and Monin.
Because race correlates in this way with burglary, the same ambiguous behavior engaged in by blacks is more suspicious than if it is engaged in by whites.
As they -- and the government -- grow ever more dependent on computer systems, monitoring of electronic intrusions or suspicious behavior on a network is growing in importance, too.
If you change that behavior without warning, it may only make them even more suspicious.
