ABC News Senior Investigative Correspondent Aaron Katersky takes us inside a global cryptocurrency scam and how to avoid becoming a victim.

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

The systems outage at the airport comes less than two months after the Crowdstrike update bug caused a worldwide outage in July.

Authorities are still working to get systems back online after the Port of Seattle and the Seattle-Tacoma International airport were hit by a possible cyberattack.

The Port of Seattle says it is working to restore internet and web services after an apparent cyberattack.

Justice Department indicts North Korean military hacker for extorting hospitals, healthcare providers

AT&T says it learned of an illegal download of data back in April and investigated the hackers theft of call records and texts from nearly all of their 90 million customers from May to Oct. 2022.

AT&T has confirmed that a hacker stole records of calls and texts from nearly all of AT&T's wireless customers, according to a financial filing from the company.

AT&T says it has taken "additional cybersecurity measures" in response to the incident, including closing off the point of unlawful access.

AT&T has announced that a hacker stole records of calls and texts of nearly all of AT&T’s wireless customers, according to a statement from the company.

The nearly week-old cyber outage has left thousands of dealers across the U.S. and Canada unable to process appointments or complete sales transactions. Cyber security expert Scott Spiro weighs in.

ABC News’ Faith Abubey discusses how hackers have broken into thousands of dealership networks across the U.S.

CDK Global, a major software provider for the auto industry, says hackers broke into its network, causing headaches for buyers and those getting their vehicles repaired.

A major auto industry software provider, CDK Global, says it was hit by cyberattacks on Wednesday, crippling business at roughly 15,000 auto dealerships in the U.S. and Canada.

Cybersecurity and Infrastructure Security Agency Director Jen Easterly discusses a new campaign aimed at educating children and parents to avoid online attacks.

Ticketmaster revealed in a filing with the federal government that it had had a data breach last week involving a "criminal threat actor."

Ticketmaster’s parent company, Live Nation, confirmed it found “unauthorized activity” on its database on May 20.

On Saturday evening, Live Nation, the parent company of Ticketmaster, confirmed its system was compromised by a cyberattack.

Nurses and patients at hospitals across the country describe the situation as chaotic after one of the nation's largest healthcare systems fell victim to a ransomware attack.

A spokesperson from Ascension says the nonprofit has “detected unusual activity” with some of its technology. The company runs 140 hospitals and 40 senior living facilities in 19 states.

UnitedHealth’s CEO says the company paid a $22 million ransom to hackers who compromised data, possibly affecting 1 out of 3 Americans. ABC News' Perry Russom reports how the hackers did it.

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

ABC News’ Erielle Reshef spoke with Dr. Chris Pierson, CEO of BlackCloak on what customers can do if their data was compromised in the AT&T data leak.

The telecom giant says over 70 million current and former AT&T customers from 2019 or earlier had their personal information leaked onto the dark web.

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.

ABC News’ Lionel Moise spoke with cybersecurity expert and www.sugarshot.io co-founder Scott Spiro about the breach and how it’s affecting patients.

Thousands of pharmacies are struggling to fill prescription drug orders because they use Change Healthcare's network to verify insurance coverage.

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.

Lurie Children's Hospital was hit with a cybersecurity incident that's caused network outages to its electronic records and communications systems.

Intelligence leaders are warning that the country's civilian infrastructure, including water and power systems, is vulnerable to hackers now working on behalf of the Chinese government.

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 said its security team detected the attack earlier in January and identified the hacker as the Russian state-sponsored hacker group “Midnight Blizzard.”

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.

It is unclear what type of cyberattack occurred.

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 ransomware attack hit Ardent Health Services, which operates 30 hospitals in six states.

The attack targeted part of the system near Pittsburgh that was made by an Israeli company.

Iranian-based hackers claimed they targeted part of the Aliquippa water system because it uses software developed by an Israeli company.

A cyber group backed by Iran has claimed responsibility for taking partial control of a water treatment plant in Pennsylvania. ABC News’ Rhiannon Ally has details.

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