Google (GOOGL  ) has announced its intention to purchase cybersecurity firm Mandiant (MNDT  ), according to a Tuesday press release.

"Today, organizations are facing cybersecurity challenges that have accelerated in frequency, severity and diversity, creating a global security imperative. To address these risks, enterprises need to be able to detect and respond to adversaries quickly...." Google states in its release. "As a recognized leader in strategic security advisory and incident response services, Mandiant brings real-time and in-depth threat intelligence gained on the frontlines of cybersecurity with the largest organizations in the world. Combined with Google Cloud's cloud-native security offerings, the acquisition will help enterprises globally stay protected at every stage of the security lifecycle."

Google is reportedly offering $23 a share for the company, totaling roughly $5.4 billion, making this one of the most significant acquisitions by the tech giant so far. Google's largest acquisition, the $12.5 billion purchase of Motorola, was a disappointing acquisition for the company that ended in divesting Motorola for less than a quarter of what it paid.

The acquisition of Mandiant looks to be a much more solid purchase, however, especially given the strong showings by cybersecurity stocks and ETFs as of late. International tensions are at a peak as Russia, known for its disposition towards cyberattacks, becomes an isolated pariah state amid its invasion of Ukraine. Attacks have been reported on both sides, from a minor production disruption at Toyota (TM  ) plants in Japan to the reported hacking of Roscosmos by western-oriented hackers.

Mandiant will already make a solid addition to Google's portfolio, but given the current state of "deniable," asymmetric cyberwar, it could also prove to be a lucrative addition. The acquisition hinges on Mandiant shareholder approval and, perhaps more critically, regulatory approval. Given the federal government's antitrust sentiment towards big tech, there does stand some risk of regulators asking tough questions over the acquisition, though to what degree regulators resist the deal remains to be seen.

Mandiant shareholders seem to be enthusiastic over the deal, with the company's shares spiking just under 20% in the last hour of trading on Monday. The morning after seems to be a bit more clear-headed for investors, with shares sliding 2.4% by noon on Tuesday. Google spent much of the day on a rollercoaster between highs and lows, landing 0.50% up from the previous day by noon on Tuesday.