EXIF orientation info in PNGs isn't used for image-orientation
https://bugzilla.mozilla.org/show_bug.cgi?id=1627423
#HackerNews #EXIF #PNG #imageprocessing #bugzilla #Mozilla #orientation #technews
Did you know that you can passively download malicious payloads onto target systems?
Lots of software caches images locally to save bandwidth, often without stripping metadata.
You can leverage this functionality to download payloads.
Simply store your payload inside a valid image, then just have the target's web browser or email client download it for you.
No more web requests to obtain follow-up payloads!
Who knew that tracking pixels could be 64KB in size?
You would not notice just by looking at them.
"To my surprise, the size limit of the Exif header was much larger than expected. An entire 64-KB worth of metadata can be stored in the image. But better yet, a single Exif field can use up the entire 64-KB of space."
ajuvo ✔
boosted
Gute Nachrichten aus dem #Maschinenraum:
Unter https://exif.antifa.ltd könnt Ihr Euch ab sofort die #Exif #Metadaten Eurer Bilder, Fotos, Videos usw. anzeigen lassen, und (wichtiger!) unter
https://exifweg.antifa.ltd könnt ihr sie auch gleich datensparsam davon befreien.
[Und wer ganz sicher gehen will kann dies unter https://exif.antifa.ltd natürlich gerne überprüfen.]
Habt den Rest-Sonntag schön, und danke an @cto für die produktive Nachtschicht ❤️
Gute Nachrichten aus dem #Maschinenraum:
Unter https://exif.antifa.ltd könnt Ihr Euch ab sofort die #Exif #Metadaten Eurer Bilder, Fotos, Videos usw. anzeigen lassen, und (wichtiger!) unter
https://exifweg.antifa.ltd könnt ihr sie auch gleich datensparsam davon befreien.
[Und wer ganz sicher gehen will kann dies unter https://exif.antifa.ltd natürlich gerne überprüfen.]
Habt den Rest-Sonntag schön, und danke an @cto für die produktive Nachtschicht ❤️
rezendi
and 3 others
boosted
Did you know Signal automatically strips EXIF metadata from every image you send? A quick way to "sanitize" a photo before posting it publicly is to forward the picture to your own "note to self" chat—Signal will strip the metadata and give you a clean copy.
How do you use "note to self"? Share your favorite tricks!
Did you know Signal automatically strips EXIF metadata from every image you send? A quick way to "sanitize" a photo before posting it publicly is to forward the picture to your own "note to self" chat—Signal will strip the metadata and give you a clean copy.
How do you use "note to self"? Share your favorite tricks!