20 of the most common cyberattacks

How to prepare for cyberattacks

An easy-to-digest checklist on the many ways you want protect yourself from a cyberattack before it happens, if it happens, and after it happens.

The top 200 most common passwords—you probably shouldn't use

Many people use the same weak passwords year after year. Check out the 2022 list of top 200 most common passwords used around the world.

The worst cyberattacks of the last 10 years

It’s been a rough 10 years in cybersecurity—and it’s only getting worse. From the Stuxnet to the Sony Hack, learn about the worst cyberattacks over the last decade.

Visualizing cyberattacks by country

Cyber crime is expected to cost the global economy trillions per year by 2025. This data illustration showcases the countries with the most severe cyber attacks from 2006-2020.

The history of malware includes computer viruses, worms, trojans, and ransomware

Some of the earliest significant pieces of malware—the Creeper worm and the Elk Cloner virus—displayed silly messages to users without causing major harm. As computer science has advanced, malware has become more easily spread, incorporated social engineering to manipulate users, targeted infrastructure systems, and been used by governments for virtual espionage.

Explaining how open source systems like Linux can be secure, despite their public source code

While no computer system is immune to all cyberattacks and malware, the transparency of open-source technology means many thousands of developers can review and oversee the underlying code powering the software on an ongoing basis. This increases the likelihood of catching and patching vulnerabilities more quickly than smaller groups of cybercriminals looking to exploit them.

Fancybear: The state-backed hacker cell

Fancy Bear (APT28) is a Russian-based hacker group that targets a variety of organizations across the globe. Learn how to prevent Fancy Bear.

19 fungal pathogens are of key concern to world health officials

In 2022, this global health body issued its first-ever list of top fungal threats to human health. It said fungal threats are spreading and occurring more frequently. The WHO’s list included 19 fungal pathogens to watch, and said that the most dangerous ones to public health are Cryptococcus neoformans, Aspergillus fumigatus, Candida albicans, and Candida auris. There are only a handful of classes of medication currently available to combat fungal pathogens, with few others in the pipeline even though antimicrobial resistance is growing.

50 famous memes and what they mean

Memes are one of the most immediate ways to communicate. The 50 most popular ones are found everywhere on the internet. Sources for this article came from Tumblr, Twitter, Know Your Meme, and other online pop culture resources and publications. This piece examines memes from the early 2000s through 2019.

Fraud and identity theft are among the most common dark web-related crimes

Credit card information, driver's license or passport scans, and login credentials are among the data bought and sold on dark web marketplaces, which can appear there without users' knowledge through data breaches. Medical records can fetch higher sums of money for their potential use in blackmail and insurance fraud.

OSINT: How hackers find their marks

What is OSINT? How do hackers gather intel about targets? Just how much can they learn about you? Learn more as we dig in to the world of OSINT.

An overview of 12 fundamental types of algorithms and the uses for each

These include search algorithms to quickly process and find important information, cryptographic algorithms to secure communications, randomized algorithms—such as Monte Carlo simulations for estimating probabilities of outcomes—and greedy algorithms, which make optimal choices based on available data in a step-by-step fashion, as seen in navigation apps.

See 16 art pieces that were inspired by or evoke elements of top phobias

CBC News informally polled readers about their fears and then found works of art either inspired by or nodding to those topics.

Invasive species are the third biggest threat to Earth's biodiversity

According to the World Wildlife Fund's Living Planet Report 2020, changes in land and sea use account for about half of all recorded threats to the diversity of the planet's species. Species overexploitation is the second-largest proportional threat at 24%, while invasive species make up 13%.

See these 16 pieces of art evoking phobias of snakes, flying, spiders, and more. 

The 10 most important (other) cryptocurrencies

Bitcoin has not only been a trendsetter, ushering in a wave of cryptocurrencies built on a decentralized peer-to-peer network, but has also become the de facto standard for cryptocurrencies. But it's not the only one. Here are some cryptocurrencies that have held on throughout steep price climbs and nosedives.

A list of common questions and answers about hurricanes from NOAA

This FAQ answers many questions hurricane researchers at NOAA have received, sorted by category. The answers provide insights into hurricane classification and naming, forecasting their movement and growth, and tips for preparing ahead of landfall.

NATO's Article 5 has been invoked once—after 9/11

The article was invoked the day after the attacks and launched a series of NATO campaigns to fight global terrorism. This page includes excerpts from a speech by then-NATO Secretary General Jens Stoltenberg about the attacks and the organization’s response.

40 key stock market terms, explained

Liquidity. Forex. Capitalization. Blue chip stocks. These are just a few pieces of stock market vocabulary most people who don't spend all day on a trading floor might not know. Thankfully, we found a fun infographic that makes it easier to learn what 40 key stock market terms mean and why each of them matters.

What is a reply all email storm?

When 30,000 people receive an email, to which anyone can "reply all," a spontaneous chain reaction of many more messages can be sparked, producing what's known as an "email storm." This has happened at a large scale in several high-profile cases, most notably in Thomson Reuter's email database. Check out Know Your Meme's breakdown of this phenomenon and description of several major examples.

The 500 subsea cables that run the internet

Subsea cables carry the majority of data sent across the globe on the internet. An estimated 552 such cables—with more in development—lay on the ocean floor, their thickness similar to a garden hose, made up of optic fibers covered in copper.

There are 5 key reasons why people carry out hoaxes

While it's hard to pinpoint just one motive for trickery, many cases indicate that hoaxers are seeking attention. Other reasons include making a profit, or simply that fooling others is fun.

In 2019, a laptop loaded with six of the worst malware in history and described as 'an exhibit of historical weaponry' sold for $1.3M.

YouTube's 10 most viewed music videos of all time

YouTube arrived in 2005 with a short, innocuous video about the San Diego Zoo. Just 20 years later, it's one of the most popular websites and a go-to for countless music fans. This list of the site's most popular music videos analyzes how the videos hold up after reaching billions of views. The biggest takeaway? "Gangnam Style" is still a thrilling watch.

Roughly 1 in 5 cancers are caused by viruses

About 20% of cancers are caused by viruses, with seven specific oncoviruses causing between 10% and 15% of cancers worldwide. These include human papillomavirus and hepatitis B and C viruses, which can lead to diseases such as cervical and liver cancer. Understanding the mechanisms of these viruses is crucial for prevention and treatment strategies.

Swimmer's ear is America's most common waterborne illness

Federal government analysis of the roughly 7 million waterborne illness cases that occur annually in the US found that swimmer's ear comprises some 4.7 million, or 65%, of the annual waterborne illnesses and 20% of hospitalizations. Norovirus infection comes in second place.

The average American likely doesn’t notice how many ads they’re targets of per day

The average American is targeted with roughly 5,000 ads each day—but the conscious mind likely isn’t capable of recalling the majority of those. Even still, many consumers have reported ad fatigue due to the near-constant onslaught of ads.

Discover the catastrophic consequences of a failure of the US electrical grid—something that is more likely than many Americans think.

As of 2025, the most cited papers in science include a review of graphene, methods to improve image recognition, streamlining electron density calculations, and optimizing protein studies.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

See how each of the more than two million known species relates to each other—and to common ancestors—in this zoomable tree of life.

Some researchers have labeled nomophobia, the fear of being without your phone, as 'the phobia of the 21st century.'

Three Ebola species are responsible for most large outbreaks of the disease, yet the only approved Ebola vaccine is known to work against just one of them.

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

When you complete a CAPTCHA on a website to prove you are human, you may be unknowingly training algorithms for self-driving cars, whose systems require training data to help identify crosswalks, bicycles, and other outdoor objects.

Fireworks-related ER visits are on the rise—in 2024, they increased by 52% as compared to the prior year.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

Explore a list of the 100 best novels of all time, compiled by some of the world's best living writers, including Salman Rushdie, Stephen King, and Jennifer Egan.

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

An investigation suggests a Scottish island became awash in forever chemicals via seafoam and seaspray—raising questions about what that means for the safety of other coastal areas.

For centuries, Niagara Falls has been a magnet for daredevils seeking to conquer one of nature's most powerful wonders, with its 200-foot drop and water rushing at 32 feet per second with 280 tons of force.

Children are now three times more likely to say they want to be a YouTuber when they grow up than an astronaut, with some even attending 'YouTube camps' that teach kids how to create content for the platform.

US intelligence allegedly pursued more than 600 schemes to assassinate Cuban revolutionary Fidel Castro.

44% of Americans say they pray at least once a day—discover how your state's religiosity stacks up against the rest of the country.

Between 10 million and 50 million people in the US develop rashes from poison ivy, poison sumac, and poison oak each year.

All rainbows are 'raincircles' caused by water droplets separating white sunlight into a spectrum of colors, but Earth's surface blocks the bottom half of the circle from our line of sight.

The Russia-Ukraine conflict is the largest ground war in Europe since World War II in casualties, forces mobilized, and displacement of civilians.