No quick fix to massive hack say security experts as a fourth malware strain is discovered
Turla is associated with the Russian intelligence service FSB and has successfully carried out many espionage-focused hacking campaigns
Hackers used ComRAT and Zebrocy malware in these attacks
It is built on an entirely different codebase and was compiled in November 2019
The watering-hole attacks might be on-going for the past several months, the researchers warn
Russian spokesman describes reports as an attempt to "drive a wedge" between Russia and Iran
Turla, linked to Russia's FSB security agency, hacked Iranian tools and infrastructure to mask its attacks on the UK, US and Middle East
Reductor malware can also replace legitimate installers from third-party websites with infected ones on-the-fly, claims Kaspersky
Attackers appear to download legitimate Adobe Flash Player from Adobe and Akamai IP addresses