Yonathan Klijnsma

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Yonathan Klijnsma, Threat Researcher at Digital Threat Management Firm RiskIQ

Articles by Yonathan Klijnsma

Espionage Campaign Leverages Spear Phishing, RATs Against Turkish Defense Contractors

Regions of the world in geopolitical turmoil, like Turkey, are prime targets for cyber espionage campaigns. Starting in mid-November, an unknown actor purporting to be from the tax collection arm of the Turkish government began a spear phishing campaign against a Turkish defense contractor. The group used tactics that have become extremely useful for cyber spies—spear phishing …


Magecart Threat Actors Are Reshipping Items Purchased With Stolen Cards Via Mules In The U.S.

Magecart is back, and the operation is more elaborate than we thought, involving physical shipping companies with mules operating in the United States. Credit card data is a hot commodity in the criminal underworld of the internet—stolen card data is readily available, and used to fund criminal enterprises of all kinds. But scammers, rippers, and carders aren’t the …