security - Peeyush Singh's Blog

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security

A collection of 3 posts

Intrusion Detection using in-built Webcam

Intrusion Detection using in-built Webcam

Introduction This post is about building an intrusion detection system on Ubuntu using the laptop's in-built camera. It can be used to detect intrusion while you are out of your room or when someone tries to access your computer while it is locked. Also, no additional hardware is

2FA with FIDO U2F / OTP / HOTP / TOTP

2FA with FIDO U2F / OTP / HOTP / TOTP

Two-factor authentication (2FA) is an authentication method where the user is granted access only after successfully authenticating oneself via two mechanisms. 1. Knowledge: something the user knows (eg. password, PIN) 2. Possession: something the user has (eg. physical key, smartphone) 3. Inheritance: something the user is (eg. fingerprint, iris scan)

WebSockets bypassing SOP/CORS

WebSockets bypassing SOP/CORS

Same-Origin-Policy (SOP) Same-Origin-Policy is a mechanism in browsers to protect the users from dynamically loaded document or script. It prevents running malicious scripts in browser to retrieve data from third party services. SOP specifies that dynamic requests can only be sent to URLs with the same Origin as the page