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Checklist for any website to ensure it's safe and secure for both the user and the business.
Website is served only over https
This prevents data from being manipulated or intercepted
HSTS http-header set
Installing a Strict-Transport-Security header, it would be extremely difficult for attackers to steal data
Ensure your content cannot be embedded in a frame on other websites
Cross-domain iframes can run malicious apps, trigger alerts, autoplay videos, and induce phishing.
Ensure password entropy checks are carried out during sign-up
This predicts the difficulty quotient of cracking a password by guess work, brute force, and dictionary attacks
Store only hash of user passwords
Do not invent your own algorithm for repated hashing. Use PBKDF2, scrypt, or bcrypt
Ban IP addresses after a certain number of unsuccessful attempts
For high risk sites, it is advisable to block an IP address after n number of unsuccessful attempts. Also, redirect the users to a message explaining the block, such as "malicious activity has been detected"
What are you using to control ssh login attempts?
The most common suggestion is to turn off daemon service, which is sometimes a default installation. Use alternate authentication methods, instead of simple passwords.
Ensure hash salts, database passwords, and server signing keys are not checked into source control
This would throttle data breaches. Salt hash is the basis of secure password storage. By putting the passwords in source control, anyine who has access to the repository can see your data.
Unit tests to ensure one person cannot access another user's content
In a multi-tenant environment or role based access structure, authorization gets ignored and users via reverse engineering can get access to other user's data.
Do forms set a cross-site request forgery cookie?
Cross-site request forgery attacks force an end-user to carry unwanted actions on a site they are authenticated in
Do session cookies have the 'Secure' and 'HttpOnly' flag set?
Is the server certificate 4096 bits or more?
Long-term future-proof key length is desired since the trouble of replacing signatures is pretty high
Is TLS1.2 the only supported protocol?
Through this security protocol, a system can communicate with the involved party. The encrypted data would not be deciphered by intruders
Supported symmetric ciphers use 256 bit keys or more
This bit size is the largest and it is unbreakable by brute force
Deliver assets through a content delivery network
This ensures fast delivery of Internet content
Validate form fields with restrictive regex
Regular expressions or regex help in defining a whitelist for input validation. Input validation is the first line line of defense during the creation of a secure app
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