• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia

Trendingnow

1

Pentagon accuses Alibaba, Baidu and BYD, three of China's biggest companies, of supporting the Chinese military

2

'We are rapidly running out of time': Watchdog sounds Social Security alarm after 22% cut confirmed for 2032

3

Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon

1

Pentagon accuses Alibaba, Baidu and BYD, three of China's biggest companies, of supporting the Chinese military

2

'We are rapidly running out of time': Watchdog sounds Social Security alarm after 22% cut confirmed for 2032

3

Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon

The 6 worst kinds of computer hackers

By
Erika Fry
Erika Fry
,
Brett Krasnove
Brett Krasnove
, and
Brett Krasnove
Brett Krasnove
Down Arrow Button Icon
By
Erika Fry
Erika Fry
,
Brett Krasnove
Brett Krasnove
, and
Brett Krasnove
Brett Krasnove
Down Arrow Button Icon
February 26, 2013, 6:33 AM ET

If the Internet has one enduring constant, it's that somewhere, somehow, somebody is being hacked. Last month cyberassaults on banks, including BB&T (BBT), Citigroup (C), and SunTrust (STI), made headlines. But a recent Ponemon Institute survey reported that the average company is attacked twice a week and loses $8.9 million a year to cybercrime. Security analysts say the first thing businesses must know is just what types of threats are lurking in the shadows. While many hackers use relatively basic tools, such as phishing or malware, they often wield them with different motives. Here are six of the most effective actors.

1. State sponsored

Who: China, Iran, Israel, Russia, U.S.

Objectives: Intelligence, state secrets, sabotage

Targets: Foreign governments, terrorists, industry

Signature: Multi-tiered, precisely orchestrated attacks that breach computer systems

Classic Case: One-fifth of Iran's nuclear centrifuges crashed after Stuxnet, a worm reportedly developed by U.S. and Israeli intelligence, penetrated computers at an Iranian enrichment facility. Iran allegedly retaliated by disrupting access to the websites of J.P. Morgan (JPM), PNC (PNC), Wells Fargo (WFC), and others.

2. Hacktivist

Who: Anonymous, AntiSec, LulzSec

Objectives: Righting perceived wrongs, publicity, protecting Internet freedoms

Targets: Bullies, Scientologists, corporations, governments

Signature: Leaking sensitive information, public shaming, creepy YouTube videos

Classic Case: The websites of PayPal, Visa (V), and MasterCard (MA) were disrupted during Operation Payback, an Anonymous-led effort to punish companies that suspended the accounts of WikiLeaks in 2010. Some $5.6 million was lost by PayPal alone.

3. Cyber-Criminal

Who: Nigerian "princes," carders, identity thieves, spammers

Objective: Treasure

Targets: The gullible, online shoppers, small businesses, data-rich health care and retail companies

Signature: Stealing data, looting bank accounts

Classic Case: Coreflood, malicious software that records keystrokes and passwords, infected 2.3 million computers in 2009, some in police departments, airports, banks, hospitals, and universities. Affected companies suffered six-figure fraudulent wire transfers.

4. Insider (You)

Who: Disgruntled employees, contractors, whistleblowers

Objectives: Score-settling, leaks, public good

Targets: Large companies, governments

Signature: Document theft

Classic Case: Maroochy Shire, an Australian district along the Sunshine Coast in Queensland, was inundated with millions of gallons of untreated sewage in 2001 when a contractor hacked and took control of 150 sewage pumping stations. He had been passed over for a job with the district. His dirty work cost Maroochy Shire upwards of $1 million.

5. Script Kiddie

Who: Bored youth

Objectives: Thrills, notoriety

Targets: Low-hanging fruit such as unprotected websites and e-mail accounts

Signature: Defacing or dismantling websites

Classic Case: An e-mail subject-lined I LOVE YOU duped people -- some of them inside the Pentagon -- in 2001. The virus it contained, which originated in the Philippines, destroyed files and simultaneously replicated itself, seeding in-boxes as it went. The so-called Love Bug caused an estimated $10 billion in digital damage and lost productivity.

6. Vulnerability Broker

Who: Endgame, Netragard, Vupen

Objective: Hacking as legitimate business

Targets: Agnostic

Signature: Finding so-called zero-day exploits -- ways to hack new software, selling them to governments and other deep-pocketed clients

Classic Case: French firm Vupen hacked Google's (GOOG) Chrome browser at a security conference last March. Rather than share its technique with the company (and accept a $60,000 award), Vupen has been selling the exploit to higher-paying customers.

About the Authors
Erika Fry
By Erika Fry
LinkedIn iconTwitter icon
See full bioRight Arrow Button Icon
By Brett Krasnove
See full bioRight Arrow Button Icon
By Brett Krasnove
See full bioRight Arrow Button Icon

Latest in

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Fortune Secondary Logo
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • World's Most Admired Companies
  • See All Rankings
  • Lists Calendar
Sections
  • Finance
  • Fortune Crypto
  • Features
  • Leadership
  • Health
  • Commentary
  • Success
  • Retail
  • Mpw
  • Tech
  • Lifestyle
  • CEO Initiative
  • Asia
  • Politics
  • Conferences
  • Europe
  • Newsletters
  • Personal Finance
  • Environment
  • Magazine
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
  • Group Subscriptions
About Us
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • About Us
  • Press Center
  • Work At Fortune
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in

Man in a white shirt and jacket.
InnovationBrainstorm Tech
Marc Lore’s robots make 500 burrito bowls an hour. A human can make 45
By Amanda GerutJune 9, 2026
6 hours ago
Sam Bankman-Fried formally files for pardon—but White House reiterates that FTX cofounder’s odds are slim
CryptoSam Bankman-Fried
Sam Bankman-Fried formally files for pardon—but White House reiterates that FTX cofounder’s odds are slim
By Camila Grigera NaonJune 9, 2026
8 hours ago
A trader works on the floor of the New York Stock Exchange (NYSE) in New York, US, on Wednesday, June 3, 2026
InvestingWall Street
Wall Street dumped nearly $1 trillion in tech stocks by midday—then clawed it back and bought peanut butter and paint
By Eva RoytburgJune 9, 2026
9 hours ago
The entrance to a U.S. Immigration and Customs (ICE) detention facility
North AmericaDepartment of Homeland Security
Texas ICE facility spent $11.5 million on guards, medical services, transportation and meals weeks before the camp even held detainees, GAO finds
By Michael Biesecker, Ryan J. Foley and The Associated PressJune 9, 2026
9 hours ago
AI isn’t replacing Hyatt’s salespeople—it’s freeing up a full day of work every week, according to the CEO
AIBrainstorm Tech
AI isn’t replacing Hyatt’s salespeople—it’s freeing up a full day of work every week, according to the CEO
By Sharon GoldmanJune 9, 2026
9 hours ago
America’s grid is reeling. General Motors offers itself as a distributed utility in disguise
EnergyAutos
America’s grid is reeling. General Motors offers itself as a distributed utility in disguise
By Nick LichtenbergJune 9, 2026
9 hours ago

Most Popular

Pentagon accuses Alibaba, Baidu and BYD, three of China's biggest companies, of supporting the Chinese military
Asia
Pentagon accuses Alibaba, Baidu and BYD, three of China's biggest companies, of supporting the Chinese military
By Kate O'Keeffe and BloombergJune 8, 2026
1 day ago
'We are rapidly running out of time': Watchdog sounds Social Security alarm after 22% cut confirmed for 2032
Economy
'We are rapidly running out of time': Watchdog sounds Social Security alarm after 22% cut confirmed for 2032
By Nick LichtenbergJune 9, 2026
14 hours ago
Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon
Environment
Trump, who has repeatedly called climate change fake, is now threatening Brazil with tariffs over the deforestation of the Amazon
By Sasha RogelbergJune 8, 2026
1 day ago
Costco CEO Ron Vachris rose from forklift driver to the C-suite without a college degree: ‘Don’t chase a title’ is the career advice that got him there
Success
Costco CEO Ron Vachris rose from forklift driver to the C-suite without a college degree: ‘Don’t chase a title’ is the career advice that got him there
By Preston ForeJune 8, 2026
2 days ago
Current price of oil as of June 8, 2026
Personal Finance
Current price of oil as of June 8, 2026
By Joseph HostetlerJune 8, 2026
2 days ago
Gen Zers are arriving at college unable to even read a sentence—professors warn it could lead to a generation of anxious and lonely graduates
Success
Gen Zers are arriving at college unable to even read a sentence—professors warn it could lead to a generation of anxious and lonely graduates
By Preston ForeJune 7, 2026
3 days ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.