POLITICO says that "three former senior officials with knowledge of the matter" have told the publication that the US Government has concluded that Stingray cell monitoring devices found in Washington, DC, were probably emplaced by Israeli operators.
North Korean hackers are turning to more obscure file formats (like Kodak Flash Pix) in the hope that these will slide unremarked past anti-virus screens, Prevailion researchers have disclosed to CyberScoop.
Ransomware may be acquiring information-stealing functionality. BleepingComputer reports that MalwareHunter Team has found that a strain of the widely used Ryuk ransomware appears to be exfiltrating files of interest to an FTP site. The malware is particularly interested in military, intelligence, and law enforcement data.
Google has now purged twenty-four apps infected with the Joker Trojan from the Play store, Information Age reports.
US Federal agencies are working out roles and responsibilities in cyberspace during the course of wargames. Breaking Defense describes the exercises as bringing together organizations from the Departments of Defense and Homeland Security. The US Defense Department has also offered Congress a look at some of its current thinking on cyber deterrence. Deterrence is commonly thought of as involving the credible threat of retaliation, but the Department calls its approach to deterrence "multifaceted," with denial playing a significant part. An adversary can be deterred if they became convinced that their attacks would be futile.