Over the weekend, one of the largest US Underlying Carriers (ULC) networks were impacted by a Distributed Denial of Service (DDoS) cyberattack, causing a service disruption.
This attack is similar to the attack on a Canadian carrier that began on September 16th and affected two UK providers earlier in the month. The US-based ULC service is not down. However, malicious traffic blocks legitimate traffic into their network, which is the carrier of records from many of our telephone numbers. This situation is unique because an attack of this size has never been successful on a carrier in the US ever.
How does this attack impact phone services?
Customers and clients (like KCH) may experience intermittent failure to call their telephone numbers, including calls with poor audio quality. In some cases, touch tones/DTMF signals may also fail. If the call connects, the caller may not be able to press 0 for the operator.
What is the impact of this DDoS attack?
An attack of this nature can affect large and small customers alike. Based on the news, providers such as Microsoft Teams, Google Voice, Ring Central, and many more are experiencing the same service disruption. At this time, an estimated time of resolution is unknown. Service may still be intermittent until wholly resolved.
Please accept our apology for any disruption to your services or care. If this is an emergency, please call 9-1-1 for assistance; visit our website at KCH.org for additional information. You may also email us at We.Care@KCH.org if you are having a hard time getting through.
We will provide additional updates as they become available.