According to the results of a recent survey of 200 C-level executives at U.S.-based enterprises, 69 percent of such executives worry that their organizations are vulnerable to targeted malware attacks, APTs and other cybercrime and cyper espionage tactics.

The survey, which was conducted by Opinion Matters on behalf of ThreatTrack Security in June 2013, also found that 21 percent of enterprises say their biggest concern is not knowing whether an attack is underway.

Fully 97 percent of enterprises with annual security budgets over $1 million still report concerns that they're vulnerable to malware attacks and cyber espionage tactics.

And one third of all enterprises surveyed say they're aware of a targeted malware attack against their company -- including 50 percent of financial services firms and 53 percent of manufacturing companies.

Still, 42 percent of respondents say they don't have a dedicated incident response team employed, and 47 percent aren't making use of advanced malware analysis tools.

"Enterprises are facing an unprecedented surge of highly targeted and sophisticated threats that are designed to evade traditional malware detection technologies," ThreatTrack Security CEO Julian Waits, Sr., said in a statement. "The only way to battle these threats effectively is with a combination of highly skilled cybersecurity professionals armed with the strongest malware analysis tools available."