There is a significant shift in cyber-criminal behaviour, with the bad guys plotting for months before pulling off huge heists instead of quicker hits with smaller rewards, Symantec India Technology Sales Director Tarun Kaura told PTI.
"They are focussing on large enterprises, with over 69 per cent of the targeted attacks in India carried out on them," he added.
Globally, targeted attacks were up 91 per cent in 2013 and lasted an average of three times longer compared to 2012.
Each of the eight top data breaches in 2013 resulted in the loss of tens of millions of data records. By comparison, 2012 had only a single data breach that reached the threshold.
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"One mega breach can be worth 50 smaller attacks. While the level of sophistication continues to grow among attackers, what was surprising was their willingness to be a lot more patient -- waiting to strike until the reward is bigger and better," he said.
"The potential for huge paydays means large-scale attacks are here to stay. Companies of all sizes need to re-examine, re-think and possibly re-architect their security posture," Kaura said.
The report found that support functions with access to critical data emerged as the strongest target for attackers.
"Personal assistants and those working in public relations were the two most targeted professions as cyber criminals use them as a stepping stone toward higher-profile targets like celebrities or business executives," he said.