CTFtime.org is a site about Capture The Flag competitions. It provides an archive of past events and writeups, a calendar of upcoming events, team ratings and rankings, and a comparison feature. Organizers can submit events, and visitors can browse tasks, writeups and teams.
pwn.college is an education platform where learners develop and practice core cybersecurity skills in a hands-on fashion. It is maintained by a team of hackers at Arizona State University and powers much of ASU's cybersecurity curriculum. The platform is open and free to participants worldwide.
BreachLab is an offensive security training platform organized into tracks of live levels. Levels are real targets on infrastructure such as SSH boxes and containers, and each solved breach earns points toward a global leaderboard and operative levels. Tracks are in early access, and flags, points and levels may change during integrity audits and patches.
ZetCode is a website offering tutorials on C#, Go, Python, Java, and JavaScript, along with e-books. Its pages include C# and Python tutorial sections and a list of updates, and it notes that Jan Bodnar is the author.
DefensiveCSS is a site of practical CSS and design tips intended to help build future-proof user interfaces. It includes an introduction explaining the concept of defensive CSS and a set of tips covering topics such as flexbox wrapping, image distortion, long content, component spacing, auto-fit versus auto-fill, background repeat, fixed CSS grid values and CSS variable fallback.
A set of hands-on coding lessons intended to help programmers improve their coding skills. The lesson index lists exercises such as BinaryGap, which asks for the longest sequence of zeros in an integer's binary representation.
EMKC Coding Challenges is a page offering practical coding tests in 17 available languages, with points awarded based on difficulty. The page lists easy, medium and hard challenges, states that new challenges are being added, and notes that a challenge can be completed up to 17 times, one for each language.
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pwn.college is an education platform where learners develop and practice core cybersecurity skills in a hands-on fashion. It is maintained by a team of hackers at Arizona State University and powers much of ASU's cybersecurity curriculum. The platform is open and free to participants worldwide.
BreachLab is an offensive security training platform organized into tracks of live levels. Levels are real targets on infrastructure such as SSH boxes and containers, and each solved breach earns points toward a global leaderboard and operative levels. Tracks are in early access, and flags, points and levels may change during integrity audits and patches.
ZetCode is a website offering tutorials on C#, Go, Python, Java, and JavaScript, along with e-books. Its pages include C# and Python tutorial sections and a list of updates, and it notes that Jan Bodnar is the author.
DefensiveCSS is a site of practical CSS and design tips intended to help build future-proof user interfaces. It includes an introduction explaining the concept of defensive CSS and a set of tips covering topics such as flexbox wrapping, image distortion, long content, component spacing, auto-fit versus auto-fill, background repeat, fixed CSS grid values and CSS variable fallback.
A set of hands-on coding lessons intended to help programmers improve their coding skills. The lesson index lists exercises such as BinaryGap, which asks for the longest sequence of zeros in an integer's binary representation.
EMKC Coding Challenges is a page offering practical coding tests in 17 available languages, with points awarded based on difficulty. The page lists easy, medium and hard challenges, states that new challenges are being added, and notes that a challenge can be completed up to 17 times, one for each language.
