Stifel analyst Erik Rasmussen views the selloff today in shares of CyrusOne as providing a "great entry point." The company was affected by a ransomware attack, but its managed service business represents less than 2% of its revenue and only six out of over 1,000 customers were affected, Rasmussen tells investors in a research note, citing the company's press release. The analyst is now "more comfortable with this issue being resolved with very little impact" to CyrusOne's financials or its credibility. As such, he views today's pullback as an overreaction and reiterates a Buy rating on the shares.