Ransomware attacks continue to represent the top cyber security threat for businesses, as incidents “skyrocketed” across 2019, according to a report by Beazley.
Beazley Breach Response (BBR) Services reported the number of ransomware attack notifications against clients increased by 131% compared to 2018.
With the growth in frequency, the sums demanded by cybercriminals also increased exponentially, sometimes reaching seven or even eight figures, it added.
Beazley also observed some evolution in the method of attack used by cyber criminal, and found that the two most common forms of attack to deploy ransomware were phishing emails and breaching poorly secured remote desktop protocol (RDP).
“With the convenience of enabling employees to work from home, using RDP can make IT systems more susceptible to attack without the right security measures in place,” said Katherine Keefe, Beazley’s global head of BBR Services.
“The coronavirus has forced many more employees to work from home and in this pressured environment it is very important that companies take the right steps to reduce the vulnerability of their IT infrastructure,” she explained.
“Always ensure employees can access their computer using a virtual private network with multifactor authentication. It is important to whitelist IP addresses that are allowed to connect via RDP, and make sure that unique credentials for remote access are in place – particularly for third parties.”
In 2019 and into 2020, BBR Services recorded an increase in reported attacks by policyholders whose systems were breached via cyber attacks against their IT managed service providers.
In some cases these attacks stopped the operations of hundreds of customers downstream from the IT provider.
“Our data demonstrates how ransomware has developed into a more serious and complex threat over the past four years,” Keefe added.
“Early on, ransomware was typically used to encrypt data as leverage for a ransom demand. However, more recently, attackers have been using ransomware variants in tandem with banking Trojans such as Trickbot and Emotet. This two-pronged attack leaves organizations not only with the debilitating impact of its critical systems and data being encrypted, but with the added risk of data being accessed or stolen,” she continued.
“Although these attacks can be damaging and complex, some of the most effective preventative measures are relatively simple. More than ever, organizations need to ensure their IT security measures are a top priority and up-to-date, that they have access to authoritative, experienced risk management advice, and, importantly that employees are trained and alert to the potential threats.”
