Nearly a week into a ransomware attack that has crippled Costa Rican government computer systems, the country refuses to pay a ransom as it struggles to implement workarounds and braces itself as hackers begin publishing stolen information

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

Hackers pretended to be law enforcement officials and gained access to users’ data.

Cyber security expert Kristopher Schroeder says Ukraine has done a great job defending itself from Russian cyberattacks amid continued warnings from the U.S. of Russian cyber warfare.

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

Hackers broke into the networks of at least six state governments last year.

ABC News' chief justice correspondent Pierre Thomas has an exclusive look inside the NSA exercises to prepare for a potential cyberattack.

U.S. law enforcement officials are encouraging Americans to update their anti-virus and anti-malware software.

ABC News’ chief justice correspondent Pierre Thomas discusses President Joe Biden’s response to Russia’s invasion of Ukraine and what the White House is calling a “devastating packages of sanctions.”

Security officials are on high alert for the possible threat of Russian cyberattacks, not just in Europe, but here in the U.S. Could such attacks drag the U.S. into war?

ABC News’ Linsey Davis speaks with former President Donald Trump’s Homeland Security Adviser and ABC News contributor Tom Bossert about the cybersecurity threat from Russia.

Homeland security officials say that Russia may target U.S. infrastructure and banking systems in cyberattacks. Howard Marshall, global cyber threat intelligence lead at Accenture Security, explains.

Homeland cyber security officials and the FBI have been aggressively warning private industry leaders and governors about the potential for Russia’s hacking.

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

Cyber criminals claim they stole some of the football team’s financial data.

NewsCorp hit with cyberattack, allegedly from China.

Canada’s foreign affairs department was hit with a cyberattack last week, according to the Treasury Board of Canada.

The agency warned consumers that criminals are tampering with some codes to steal information and money.

President Biden warned Russia's Vladimir Putin to crack down on ransomware gangs

A top government cybersecurity official on Tuesday warned "hundreds of millions of devices" could be linked to vulnerable software.

A group of lawmakers say proposed British rules aimed at cracking down on harmful online content should be beefed up with tougher measures

The vulnerability is linked to a commonly used piece of software called Log4j, a utility that runs in the background of many commonly used software applications.

The FBI and Homeland Security told critical industries and businesses to be on the lookout for crippling ransomware attacks during holidays and weekends.

Cyber Command has over 2,000 military personnel from soldiers to civilians who are focused on securing the nation from foreign threat actors.

Pierre Thomas goes inside the NSA in an exclusive interview with its director, Gen. Paul Nakasone.

Every day there are millions of attempts to scan America's cyber networks from foreign adversaries, Director of the National Security Agency Paul Nakasone says.

Two suspected hackers have been arrested in a global cybercrime crackdown.

The nation's top law enforcement officials announced on Monday the seizure of approximately $6 million in ransom payments and new criminal charges.

The Cybersecurity and Infrastructure Security Agency has issued a sweeping directive to federal agencies to fix hundreds of vulnerabilities in software and hardware.

Microsoft on Monday alleged that the Russian nation-state actor behind the SolarWinds hack at it again, this time attacking the global supply chain.

Microsoft says the same Russia-backed hackers responsible for the 2020 SolarWinds breach continue to attack the global supply chain and have been targeting cloud service resellers and others

The European Union is warning Russia against allowing hackers to attack data bases or spread disinformation in the bloc just as Germans prepare to go the polls for parliamentary elections

A ransomware attack hit a cooperative of Iowa corn and soy farmers.

After being hit with a ransomware attack, Howard University was forced to cancel classes Tuesday, but it didn't say who was behind it or what the demand was.

The government tells companies to stay alert for potential cyberattacks over Labor Day.

Top tech firms have committed to investing billions to strengthen cybersecurity.

Instead of a complex series of letters, numbers, and symbols, they say random words create unusual letter combinations, which are more difficult for hacking software to guess.

South Africa's state-owned rail and ports operator Transnet says that four of the country's largest ports are starting to reopen after having been closed by a cyberattack

A U.S. official says President Joe Biden plans to meet next month with business executives about cybersecurity

The Justice Department on Monday released an indictment charging four Chinese nationals with state-backed worldwide hacking campaign.

The Justice Department on Monday released an indictment charging four Chinese nationals with state-backed worldwide hacking campaign.

The NSA, FBI and Homeland Security officials claim that China has been contracting with, and profiting from, criminal hackers who attack companies around the world.

The State Department will offer rewards up to $10 million for information leading to the identification of anyone engaged in foreign state-sanctioned malicious cyber activity, including ransomware attacks, against critical U.S. infrastructure

The single biggest global ransomware attack yet continues to bite as more details emerge on how a Russia-linked gang breached the company whose software was exploited

A Russia-based hacking group is believed to be behind the latest ransomware attack targeting small businesses across the globe. ABC News’ Faith Abubey has more.

While Kaseya reports less than 1% of customers were affected by the hack, it’s being called the largest security breach ever.

Cybersecurity working to stem the impact of the biggest global ransomware attack

Officials say a Russian hacking group is responsible for the cyberattack, putting thousands of small businesses on hold.

The hack saw ransomware spread through a software company used by the businesses to manage computer services.

Situation complicated in the U.S. by offices lightly staffed for Fourth of July.