An extensive, several-hour-long interruption to Iran’s telecom infrastructure and internet hit that took place on February 8 that was likely caused by a distributed denial of service (DDoS) attack.

The non-governmental organization Netblocks reported that at 11:45 a.m. local time Iranian internet connectivity from that country’s primary network operators was down by 25 percent eventually falling to a low of 75 percent below normal capacity at one point several hours later. This affected local cellular and land-line operations.

“Observations are consistent with a targeted disruption and no technical faults are evident at the present time,” Netblocks reported, adding in the local internet appeared to have been shut down by government authorities as they attempted to fend off the attack.

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