TEL AVIV - As part of a sophisticated scheme involving spam proliferation and click monetization, over 8,000 domains and 13,000 sub-domains once owned by major, legitimate brands and institutions have been hijacked to allow millions of spam emails to bypass standard security blocks for nefarious gain. This coordinated malicious activity – dubbed “SubdoMailing” – has been going on since at least September 2022, according to Guardio Labs, the Israeli security … [Read more...]