Security experts have discovered a potentially catastrophic flaw that for more than a decade has made it possible for attackers to decrypt HTTPS-protected traffic passing between Android or Apple
devices and hundreds of thousands or millions of websites, including AmericanExpress.com, Bloomberg.com, NSA.gov, and FBI.gov.
In recent days, a scan of more than 14 million websites that support the secure sockets layer or transport layer security protocols found that more than 36 percent of them were vulnerable to the decryption attacks. The exploit takes about seven hours to carry out and costs as little as $100 per site.
“FREAK†flaw in Android and Apple devices cripples HTTPS crypto protection | Ars Technica