NEW YORK ( TheStreet) -- The cost of cybercrime is increasing dramatically for U.S. companies, according to the latest research from the Ponemon Institute on Monday, as firms wrestle with an increasingly aggressive threat landscape. The Hewlett Packard ( HPQ)-sponsored study found that the average cybercrime cost incurred by U.S. firms is $8.9 million per annum, an increase of 6% on 2011 and a hike of 38% from 2010. The research, which surveyed 56 U.S. organizations, also revealed an average of 102 successful attacks per week in 2012, up from 72 in 2011 and 50 per week in 2010. The Ponemon Institute defines a successful attack as one that infiltrates a company's network or its enterprise IT system. "I think that the attacks are more sophisticated," Larry Ponemon, founder of the Ponemon Institute, told TheStreet. "In some cases, the bad guys are getting smarter." A number of big-name firms, such as Sony ( SNE), have already hit the headlines after suffering cyber attacks. Ponemon cited denial-of-service (DoS) attacks and malicious code as posing big challenges to businesses, along with the threat of "malicious insiders" within their organizations. The phenomenon of employees hooking their own personal devices to the corporate network (known as Bring-Your-Own-Device, or BYOD) is also creating a security headache, he added. Nonetheless, the expert warned that cybersecurity awareness could be better, particularly within the C-suite. "The number one issue is creating awareness in the boardroom," he said. "Even after all these stories like Sony, it's clear that most CEOs and boards are not paying attention to this issue until it's too late." Organizations, both in the corporate realm and in government, have already noted an upswing in cyber attacks. In June, for example, the Department of Homeland Security reported that attacks against U.S. critical infrastructure, such as the power grid, are skyrocketing. The Department's Industrial Control Systems Cyber Emergency Response Team (ICS-CERT) said that it received 198 security incident reports in 2011, a significant increase from the 41 it received in 2010. Last month, security guru Eugene Kaspersky, CEO of Kaspersky Lab, warned that hackers could shut down power in most of the world within a matter of decades.