If you have ever been part of a big public company merger then most likely the merger included an audit and review of the IT assets, principally those that provide the accounting and reporting. Post merger and before the two merged companies are interconnected there is also a review of the security policies in order to determine risks and gaps that could lead to compromise. If there is a large difference in policy, the interconnectivity can be delayed until the security differences are corrected and verified. This behavior is prudent. Data compromise can damage a company’s carefully guarded reputation and lead to significant losses. Beyond loss in sales it can also drive the stock price down.
Private Equity firms that buy and sell companies in the middle tier are strongly focused on the financial health of the company they are purchasing. Certainly financial health indicates a well run company. Hours are spent structuring the deal and ensuring they know what they are acquiring. No one wants to be defrauded. From a sellers perspective they want a high asking pricing and zero encumbrances.
From what I have seen, both buy side and sell side are paying little attention to either information security or physical security risks. This, even though middle tier companies tend to have fewer resources and are more likely to have major security gaps, whether within their facilities, or their network infrastructure. Consider a scenario where you are either buying or selling a company and it has been compromised and the hackers are quietly laying in wait, collecting additional access credentials and elevating privileges. Over time they will be able to exfiltrate all intellectual property. In the case where the hacking is being done by a state actor it will be shared with domestic competitors. If this is a platform company, that has been built up over several years, this amounts to a staggering loss of value. The buyer is accumulating exposure in the same way someone who sells naked options without holding the underlying asset accumulates exposure. The same can be said for the supply chain where down stream providers of services connected into the network increase the size and diversity of the threat landscape. A compromise within this system if not properly secured could bring down years of work and destroy any equity built. Any time one is purchasing or selling a company, he should take security exposure seriously and hire the teams necessary to do a thorough review.
I frequently hear people say that a business ending compromise is a rare event. How rare or improbable an event is, matters less than the consequences of it occurring. You can’t zero out risks, of course, but you should follow what works. If one is not already doing this I recommend the list below. It applies to domestic acquisitions within first world countries. Cross border buys add additional challenges (e.g. FCPA exposure) but this list will still apply at the macro level.
- Thorough review and harmonization of security policies.
- Reciprocal audit agreements with 3rd party suppliers in place.
- Thorough review of security controls.
- Conduct a network vulnerability assessment covering both internal networks and boundaries.
- Perform a penetration test (physical and digital).
- Look at patch management processes.
- Review identity management practices and access control.
- Code audit of custom mission critical applications.
- An up to date threat model.
- Physical security audit.