‘Extremely serious’ cyber-attacks have surged by 50% over the past year, with UK security agencies now addressing a new nationally significant attack every two days, according to the latest data from the National Cyber Security Center (NCSC).

In what officials are calling a “call to arms,” national security leaders and ministers are encouraging all organizations, from small businesses to major corporations, to develop contingency strategies for the possibility that their “IT infrastructure is compromised.” [is] Tomorrow, all screens could potentially be rendered [go] Blank.”

The NCSC, a division of GCHQ, stated in its annual report released on Tuesday that a “highly sophisticated” China, along with a “competent yet reckless” Russia, Iran, and North Korea, represent the primary national threats. This rise is fueled by ransomware attacks from profit-driven criminals and society’s growing dependence on technology, resulting in more potential targets for hackers.

Prime Minister Rachel Reeves, Security Secretary Dan Jarvis, and Technology and Business Secretaries Liz Kendall and Peter Kyle have contacted the leaders of hundreds of the UK’s largest companies, urging them to elevate cyber resilience to a board-level concern and cautioning that hostile cyber activities in the UK are becoming “more intense, frequent, and sophisticated.”

“We must not make ourselves an easy target,” stated Anne Keast-Butler, GCHQ’s director. “It’s critical to prioritize cyber risk management, integrate it into governance, and set a tone from the top.”

The NCSC dealt with 429 cyber incidents from the past year up to September, with nearly half considered to be of national significance, a figure that has more than doubled in the last year. Among these, eighteen incidents were categorized as “very serious,” indicating they profoundly affected governments, essential services, the public, and the economy. Many of these were ransomware attacks, with Marks & Spencer and Co-op Group among those heavily impacted.

“Cybercrime poses a significant threat to our economy’s security, businesses, and the lives of individuals,” Jarvis remarked. “We are working tirelessly to combat these threats and support organizations of all sizes, but we cannot do this alone.”

The NCSC refrained from commenting on reports suggesting it is investigating possible Russian involvement in the severe attack on Jaguar Land Rover, which has halted production. This report indicated that Russia is encouraging unofficial “hacktivists” to target the UK, the USA, as well as European and NATO nations.

Overall, the number of attacks up to September signifies the highest level of cyber threat activity recorded by the NCSC in the last nine years. For the first time in a year, the UK and its allies have detected Russian military units executing cyber attacks, provided recommendations against a China-linked campaign affecting thousands of devices, and raised alarms over cyber attackers affiliated with Iran, as noted by the NCSC. Domestic threats also persist, with two 17-year-old boys arrested in Hertfordshire last week following an alleged ransomware hack of children’s data from the Kido nursery chain.

Hackers are increasingly incorporating artificial intelligence (AI) to enhance their activities, and although the NCSC has not yet encountered an AI-driven attack, they predict that “AI will almost certainly present cyber resilience challenges by 2027 and beyond.”

“We observe attackers improving their capacity to inflict significant damage on the organizations they compromise and those dependent on them,” commented Richard Horne, NCSC’s chief executive. “Their disregard for their targets and the harm they cause is clear. This is why all organizations must take action.”

He emphasized the psychological toll inflicted on victims of cyberattacks, stating, “I have been in numerous meetings with individuals profoundly affected by cyberattacks on their organizations. I am aware of the anxiety, the sleepless nights, and the consequent turmoil caused by such disruptions for employees, suppliers, and customers.”