HMM: Powerful Cyber Attack Takes Down 25% Of Iranian Internet.

The NetBlocks internet observatory, which maps internet freedom in real-time, confirmed that there was extensive Iranian telecommunications network disruption on the morning of February 8. The internet observatory, an accurate and impartial monitor of internet availability, uses a combination of measurement and classification techniques to detect disruptions and critical infrastructure cyber-attacks in real-time. In a NetBlocks tweet, the national internet connectivity drop to 75% was said to be due to Iranian authorities activating the “Digital Fortress” cyber-defense mechanism, also known as DZHAFA.

In a NetBlocks report, the DEZHFA activation is said to have been implemented in order to “repel a cyber-attack on the country’s infrastructure.” With both fixed-line and mobile network providers impacted, it was seven hours before normal internet connectivity was resumed. A spokesperson for Iran’s Telecommunication Infrastructure Company, affiliated to the ministry of ICT and Iran’s sole provider of telecommunications infrastructure, Sadjad Bonabi, tweeted that a “distributed denial of service attack” (DDoS) had been “normalized” with the “intervention of the Dzhafa Shield.”

Us? The Israelis? A private actor?