Officials said they are "confident" that the Russian government directed those attacks on American political organizations.
Admiral James Stavridis, Tufts' Fletcher School dean, discusses national security and the difference in political styles between the two candidates.
CNBC's Eamon Javers reports former Homeland Security Advisor Tom Ridge wrote an op-ed piece warning of the hidden dangers of terrorist using the U.S. and global postal systems but questions remain about who is funding the safety measures message.
CNBC contributor James Pethokoukis says Donald Trump's speech last night took a tone of "American is under siege." CNBC contributor Jared Bernstein, and Libby Cantrill, PIMCO, discuss expectations for the DNC, and themes to come for the rest of the presidential race.
Michael Barrett, Diligent Innovations CEO, reacts to the deadly France attack on Bastille Day, and the role of the government in protecting citizens.
Former Continental Airlines CEO Gordon Bethune, discusses the security and consumer impact after the terror attack in Nice, France.
Michael Ellenbogen, Evolv CEO, discusses his company's technology which proposes it can help prevent mass causalities.
Holman Jenkins, Wall Street Journal, talks about using big data to combat terrorism and weighs in on gun control.
President Obama addresses the impact of U.S. strikes on ISIL's revenue.
President Obama addresses the current and past efforts to destroy ISIL.
President Obama says there is currently no information that indicates the Orlando massacre was led by a foreign terrorist group.
President Obama speaks about the deadly Orlando shooting.
We have to change the paradigm of the way we look at the threat, says Manhattan District Attorney Cyrus Vance discussing the need to work with other countries in an effort to thwart cyberattacks. Prevention is better than prosecution, says Vance.
Gordon Bethune, CNBC Contributor and Former Continental Airlines Chairman & CEO, Seth Kaplan, Airline Weekly Managing Partner, discuss the growing issue of long security lines at TSA checkpoints in U.S. airports and what could be done to alleviate the problem.
NYPD Commissioner William Bratton weighs in on the polarizing debate over encryption and the battle between privacy versus security.
A former Treasury legal counsel explains how the US vets foreign acquisitions of US companies to make sure there are no national security risks.
Rep. Ed Royce, (R-Calf.), weighs in on security risks in the U.S. and the expanding reach of ISIS around the globe. Also Rep. Royce presents his plan to battle terrorism.
Walter Isaacson, Aspen Institute CEO, shares his thoughts on the changing methods of fighting terrorism.
Robert Liscouski, former assistant secretary at the Department of Homeland Security, discusses the law enforcement protocols and security responses to shooting attacks in Washington D.C.
CNBC's Eamon Javers reports on U.S. Attorney General Loretta Lynch and FBI Director James Comey speaking about the indictment of seven Iranian hackers for cyberattacks against U.S. financial systems and a New York dam.