Emergency services are increasingly likely targets for cyberattacks, warns the Department of Homeland Security.

Brooklyn-based victims were scammed out of $5 million after they were convinced to invest in cryptocurrency.

The United States has sanctioned China-based hackers for allegedly targeting U.S. critical infrastructure, the Treasury Department announced Monday.

"Impact x Nightline" takes a look at some of the most sensational stories of people getting played by phony people online.

The UnitedHealth Group said it is making progress in its recovery from one of the worst cyberattacks on a health care system in United States history.

A Russian state-backed group that Microsoft said hacked into its corporate email accounts was able to gain access to its core software systems, the company said.

In a new cyber alert, the FBI and its international partners warn that Russians are exploiting Ubiquiti EdgeRouters and using their default credentials to hack into them.

The Royal Canadian Mounted Police launched a criminal investigation into what happened and how their systems were able to be breached, the agency told ABC News.

Hackers from China spent up to five years in U.S. networks as part of a cyber operation that targeted U.S. critical infrastructure, law enforcement agencies said.

The 'Volt Typhoon" operation targeted U.S. infrastructure, the FBI director said

China's hackers are preparing to "wreak havoc" and "cause real world harm" to Americans, FBI Director Christopher Wray warned on Wednesday.

Microsoft revealed that the Russian-backed hacker group Midnight Blizzard infiltrated a "small percentage" of the company's corporate email accounts.

A foreign exchange student who disappeared in an alleged cyber kidnapping was found safe inside a tent on a Utah mountainside following a dayslong search, police said.

Corewell Health, a Michigan health system, reported a data breach among a vendor that may have exposed personal and medical data of more than 1 million patients.

The company said it involves "substantially all of our current and former customers" sensitive personal information.

Office retail company Staples was hit with a cyberattack, the company announced in a post on their website Thursday.

A New Jersey health system says its recent outages are likely the result of a cyberware attack, the latest health care organization to be a victim of such attacks.

A new report details alleged funding mechanism of North Korean cyber espionage.

Pro-Russia hackers have claimed responsibility for a cyber attack that crashed the British royal family's website over the weekend.

An August cyberattack on Clorox caused "wide-scale disruptions" in its operations, which could mean product delays and shortages, according to a securities filing Monday.

MGM Resorts International said Thursday that it is still working to resolve issues from a cyberattack as another major resort operation said it was targeted too.

IT systems at several major hotels along the casino strip were in the dark following a cyberattack on their computers, MGM hotel officials said.

The Justice Department earlier this week charged nine Russian nationals who they say used Russian-based malware in cyberattacks to steal money from U.S. companies.

The U.S. ambassador to China and the State Department’s Assistant Secretary for East Asia Daniel Kritenbrink’s email accounts were breached by China-based hackers.

U.S. government networks were hit by a cyberattack affecting several agencies, but the attack does not pose a major risk to national security, an official said Thursday

Hospitals have become a target for ransomware, which take control of vulnerable online networks and demand a ransom to unlock them, severely disrupting patient care.

The Justice Department on Tuesday announced the dismantling of a global network of computers infected by Russian malware.

FBI warns against using public charging stations

The Biden administration plan focuses on strengthening the public-private partnerships that encourage security firms to share what they know about hacker networks

A report from Mandiant Intelligence, an arm of Google, found that organizations across the globe may be largely flying blind in responding to cybersecurity threats

Baltimore County Public Schools failed to act on several state recommendations before a November 2020 hack, a state inspector general's report says.

FBI Director Christopher Wray described how his agency saw an increase in cyberattacks from Russia at the beginning of its invasion of Ukraine

T-Mobile says they discovered a "bad actor" was taking information through a single application, according to an SEC filing by the company this week.

The agency director echoed President Biden's warning on Monday.

White House National Security Council spokesman John Kirby said it's still "too soon to know" whether the Russian government was behind the cyberattacks on U.S. airports.

A senior official briefed confirmed some of the nation's largest airports have been targeted for cyberattacks by an attacker within the Russian Federation.

Three Iranian nationals have been indicted for allegedly hacking into hundreds of computers in the U.S. and around the world, demanding, and sometimes getting, a ransom.

Federal law enforcement officials said they anticipate ransomware attacks against schools may increase as the 2022/2023 school year begins.

Goldman Sachs is investing $125 million into cyber security as a part of a new strategic investment into Fortress Information Security.

It comes as other U.S. agencies warned of Russia's cyber capabilities.