This is stated on the website of the head of Ukraine.

It is noted that this post was taken by Alexey Korneichuk.

“To appoint Korneychuk Alexey Alexandrovich the head of the Department of counterintelligence protection of state interests in the field of information security of the Security Service of Ukraine,” the statement says.

In November Zelensky appointed "the head of the SBU in the Crimea."