McAfee Labs' 2015 Threats Predictions report sees increased cyber-warfare and espionage, along with new strategies from hackers to hide their tracks and steal sensitive data.
"Cyber espionage attacks will continue to increase in frequency," the report said.
"Long-term players will become stealthier information gatherers, while newcomers will look for ways to steal money and disrupt their adversaries."
McAfee said small nations and terror groups will become even more active and will "attack by launching crippling distributed denial of service attacks or using malware that wipes the master boot record to destroy their enemies' networks."
At the same time, cybercriminals will use better methods to remain hidden on a victim's network, to carry out long-term theft of data without being detected, the researchers said.
"In this way, criminals are beginning to look and act more like sophisticated nation-state cyberespionage actors, who watch and wait to gather intelligence," the report said.
The report also said hackers are looking to target more connected devices, including computers in the farming, manufacturing, and health care sectors.
"The number and variety of devices in the Internet of Things (IoT) family is growing exponentially. In the consumer space, they are now seen in appliances, automobiles, home automation, and even light bulbs," McAfee said.