WASHINGTON (AP) — CIA Director John Brennan is warning that Russia has "exceptionally capable and sophisticated cybercapabilities" and that the United States must be on guard.

FILE - In this Sept. 7, 2016 file photo, Russian President Vladimir Putin holds the Cabinet meeting in Moscow's Kremlin, Russia. Recent hacks of election data systems in at least two states have raised fear among lawmakers and intelligence officials that a foreign government is trying to seed doubt about - or even manipulate - the presidential race, renewing debate over when cyberattacks cross red lines and warrant a U.S. response. (Mikhail Klimentyev/Sputnik, Kremlin Pool Photo via AP, File) http://syndication.ap.org/AP.Distro.ContentBroker2/ContentBroker.aspx?contentid=8e11779b3d61454c86de301f3eb65bc0&iid=d08d92fc61e54ca8af6b24eb2c131fc4&rsn=0&recordid=d08d92fc61e54ca8af6b24eb2c131fc4&filingId=e87d55c2574f4729aa238142b81e5974&role=Preview&reldt=2016-09-10T11:25:10&media=Photo&sz=52196&dest=ak&trF=WX101&ofn=Campaign%2b2016%2bElection%2bConfidence.JPEG&fmt=jpg&relativeUrl=jpg/2016/201609/10/8e11779b3d61454c86de301f3eb65bc0.jpg&s3Key=versions/preview-v00.jpg&authToken=eNotizsOwyAQBU8E2vXCgguknIVPpC1iLGMUF3v4UOQVr5kZbU9iYtgdB6IAaztFLZJiQwxhz4Yqo3HeFRO5NkOAb2qZfS6gXerKwZPOkUo%2f7kvyvPs1XnkOOdpYN6S2y5b%2b0SlLRmDS85v%2bAD2onMlvlu2Gm43%2bB5DyLYA%3d CIA Director John Brennan is warning that Russia has "exceptionally capable and sophisticated cybercapabilities" and that the United States must be on guard.

Brennan was asked in a television interview Sunday whether Russia is trying to manipulate America's presidential election. Brennan didn't say, but he noted the FBI is investigating recent computer intrusions at the Democratic National Committee.

He also cited Moscow's aggressive intelligence collection.

Brennan said: "I think that we have to be very, very wary of what the Russians might be trying to do in terms of collecting information in a cyber-realm, as well as what they might want to do with it."

Brennan spoke on CBS' "Face the Nation" on the 15th anniversary of the Sept. 11 attacks.