Ravi Sir's Cyber Security Cards › Revision Cards
S3 Block Public Access
Revision card: S3 Block Public Access. Easy English, with a real example. Scan the QR for the full lesson.

Read card text
What this card says
| Setting | Effect |
|---|---|
| Block Public Access ON | bucket stays private |
| Bucket policy | who can read/write |
| Presigned URL | share one file, short time |
In one line
Keep S3 Block Public Access ON so a storage bucket stays private; share single files with short-lived presigned URLs.
Note
Example: keeping customer files in an S3 bucket private.
Learn more in the lesson: 14.3 Block Public Access and Bucket Policies