There is little question that automated penetration testing applications have a strong future, Selby said, but it remains unclear whether businesses will buy the tools from independent vendors or from larger services providers.

"I definitely think this is an important piece of a larger market, there's an opportunity for customers to save money they might spend on consultants to do internal testing for security preparedness and awareness," said Selby. "But we think that they're angling for an acquisition, and IBM or HP could be a logical place for them to end up."

Core executives, including Paget, flatly deny the accuracy of 451 Group's assessments.

Rather than priming the company for a sale, Core's leadership is undergoing the process necessary to position the firm to take advantage of significant business opportunities as a standalone, the CEO said.

While not ruling out acquisition as a possible fate for Core as it is for all VC-backed startups, Paget maintained that the executive shift is one aimed at aligning the right team for continued growth, not for an immediate sale.

Paget has agreed to remain on as the interim CEO as the talent search is carried out, and he also remains a significant shareholder in the firm, according to sources close to the company.

"We're currently growing very fast and see an opportunity to make this a very substantive company over the next few years in terms of its role in the information security space," Paget said. "The attacks are becoming more sophisticated, and what we've been preaching for years about attackers compromising corporate information has become an important topic among customers."

"Sometimes to achieve these types of goals you have to swallow your pride and consider what might help the company best take advantage of the opportunity, and bringing onboard a new CEO was one of the moves we wanted to make to support that," he said.

Company representatives accounted for the departure of Caceres, the outward face of the firm's flagship Core Impact product line, as a personal matter with the lead engineer and chief marketer seeking a change of pace after spending a decade in the company.

The timing of the two announcements was coincidental, Core media officials said.

At least one of Core's directors confirmed the plans for the pen-testing outfit to continue to go it alone.

Robert Steinkrauss, a Core board member who most recently served as Chairman and CEO of data encryption specialist Ingrian Networks, said the executive change is indeed directed at finding the individual best suited to helping the pen tester tackle its next wave of growth.

"Paul has grown the company tremendously, and it's about to finish its best quarter ever by far, but this is about having the right CEO in place to help extend the business even further," Steinkrauss said. "This company is in a position right now to raise additional funding and expand its channel and product capabilities; people are spending billions on security, and this is a company whose products can tell you if those investments have been worthwhile."