Mergers and acquisitions present extra challenges for IT network security. Inevitably, a merger combines security organisations with different security philosophies, policies, technologies and needs. "If one company has a policy that all security needs to stay in-house and the other has outsourced its security apparatus, obviously they have a conflict," says Chris Ellerman, national security practice director at Dimension Data North America.
And that presumes that the merging organisations are in the same vertical industries. When the merger crosses verticals, the differences can be even greater and in some cases aren't completely reconcilable. "I've seen mergers that resulted in two divisions permanently operating on different security levels on a single IT backbone due to the requirements of their vertical industries," Ellerman says.
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