Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
BSides Munich
Search
Sponsored
·
SiteGround - Reliable hosting with speed, security, and support you can count on.
→
Mike West
April 03, 2017
Programming
420
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
BSides Munich
Mike West
April 03, 2017
More Decks by Mike West
See All by Mike West
W3C Permissions Workshop - 2022-12-05
mikewest
0
150
Isolation by Default
mikewest
0
2.2k
The Web We Can Ship
mikewest
0
580
Web Platform Security @ CMS Security Summit 2020
mikewest
0
3.9k
Web Platform Security @ TechDays 2019
mikewest
1
230
Cookies are bad @ HTTP Workshop 2019
mikewest
0
550
Web Platform Security @ CMS Security Summit
mikewest
0
170
Web Platform Security PhD Summit @ Google Munich
mikewest
2
1.1k
Hardening the Web Platform - AppSec EU, 2016
mikewest
5
1.6k
Other Decks in Programming
See All in Programming
re:Inventに行く前に知っておきたい現地参加のノウハウ
nokomoro3
0
400
ジョジョの世界をXRで再現する
mofurune
0
150
RAG の “R” を Swift で覗いてみる 〜「意味から探す」検索の仕組み〜
nao_randd
0
140
Herb in Rails 8.2: Your ERB views, now HTML-aware @ Rails World 2026, Austin, Texas
marcoroth
0
200
半永久的に提供し続けられるプライベートクラウドを目指して ― 利用者の認知負荷を抑えるAPI抽象化とハードウェア世代交代の基盤設計
tomokon
0
480
Domain-Driven Transformation
hschwentner
2
2.3k
気持ちぃ〜角丸 Squircle
ryu1013
0
220
ハーネス設計入門 〜 基礎知識の整理から実務へのステップアップ 〜
kinopeee
22
22k
iOS 27でニュースアプリはどう変わる!? 〜日経電子版の新機能対応と、開発事例から〜
lynnswap
7
13k
技術的負債の返済は、AI時代の複利で効く投資 — 経営としての意思決定とその遂行
curekoshimizu
1
2.3k
SREの越境 / SRE Collaboration
y0hgi
2
300
AIに “答え“を書かせるのを やめてみた
___akari11
0
120
Featured
See All Featured
What's in a price? How to price your products and services
michaelherold
247
13k
コードの90%をAIが書く世界で何が待っているのか / What awaits us in a world where 90% of the code is written by AI
rkaga
63
46k
Ethics towards AI in product and experience design
skipperchong
2
420
Measuring & Analyzing Core Web Vitals
bluesmoon
9
1k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
203
77k
Collaborative Software Design: How to facilitate domain modelling decisions
baasie
1
340
Claude Code のすすめ
schroneko
67
230k
Jess Joyce - The Pitfalls of Following Frameworks
techseoconnect
PRO
1
440
KATA
mclloyd
PRO
35
16k
RailsConf 2023
tenderlove
30
1.6k
What Being in a Rock Band Can Teach Us About Real World SEO
427marketing
0
1.1k
Rails Girls Zürich Keynote
gr2m
96
14k
Transcript
Mike West, @mikewest,
[email protected]
https://goo.gl/F0o9kR Hardening the Web Platform
Slides: https://goo.gl/F0o9kR
None
None
None
https://goo.gl/MycPb7
"Sharpening", https://flic.kr/p/sbo18H
"Vintage Camillus 1006", https://flic.kr/p/eNbtJ8
"Vintage Camillus 1006", https://flic.kr/p/eNbtJ8
None
https://securethe.news/
https://letsencrypt.org/
https://caddyserver.com/
https://goo.gl/ptS8FO https://goo.gl/nzbqQo
Pro tip: Content-Security-Policy: default-src https:; report-uri /reports-r-us
Content-Security-Policy: upgrade-insecure-requests https://goo.gl/hcin3m
https://goo.gl/51hqZa
https://goo.gl/Kd2eMQ
https://goo.gl/ciyreA
https://goo.gl/rStTGz
AppCache getUserMedia crypto.subtle.* ServiceWorker navigator.credentials navigator.geolocation PaymentRequest EME https://goo.gl/rStTGz Notification
https://goo.gl/Wwpnjw https://goo.gl/fzVgNt
127.0.0.1 192.168.1.1 192.220.74.179 https://goo.gl/Wwpnjw
"Vintage Camillus 1006", https://flic.kr/p/eNbtJ8
https://goo.gl/Wamh7S
default-src 'none'; base-uri 'self'; block-all-mixed-content; child-src render.githubusercontent.com; connect-src 'self' uploads.github.com
status.github.com api.github.com www.google-analytics.com github-cloud.s3.amazonaws.com wss://live.github.com; font-src assets-cdn.github.com; form-action 'self' github.com gist.github.com; frame-ancestors 'none'; frame-src render.githubusercontent.com; img-src 'self' data: assets-cdn.github.com identicons.github.com www.google-analytics.com collector.githubapp.com *.gravatar.com *.wp.com *.githubusercontent.com; media-src 'none'; object-src assets-cdn.github.com; plugin-types application/x-shockwave-flash; script-src assets-cdn.github.com; style-src 'unsafe-inline' assets-cdn.github.com
https://goo.gl/lJq6jj https://goo.gl/dqPkYn
script-src https://connect.facebook.net https://cm.g.doubleclick.net https://ssl.google-analytics.com https://graph.facebook.com https://twitter.com 'unsafe-eval' https://*.twimg.com https://api.twitter.com https://analytics.twitter.com
https://publish.twitter.com https://ton.twitter.com https://syndication.twitter.com https://www.google.com https://t.tellapart.com 'nonce-LrNe0GlzopB0DPFNqwdllg==' https://platform.twitter.com https://www.google-analytics.com 'self'; frame-ancestors 'self'; font-src https://twitter.com https://*.twimg.com data: https://ton.twitter.com https://fonts.gstatic.com https://maxcdn.bootstrapcdn.com https://netdna.bootstrapcdn.com 'self'; media-src https://twitter.com https://*.twimg.com https://ton.twitter.com blob: 'self'; connect-src https://graph.facebook.com https://*.giphy.com https://*.twimg.com https://embed.pscp.tv https://api.twitter.com https://pay.twitter.com https://analytics.twitter.com https://*.twprobe.net https://media.riffsy.com https://embed.periscope.tv https://upload.twitter.com 'self'; style-src https://fonts.googleapis.com https://twitter.com https://*.twimg.com https://translate.googleapis.com https://ton.twitter.com 'unsafe-inline' https://platform.twitter.com https://maxcdn.bootstrapcdn.com https://netdna.bootstrapcdn.com 'self'; object-src https://twitter.com https://pbs.twimg.com; default-src 'self'; frame-src https://staticxx.facebook.com https://twitter.com https://*.twimg.com https://5415703.fls.doubleclick.net https://player.vimeo.com https://pay.twitter.com https://www.facebook.com https://ton.twitter.com https://syndication.twitter.com https://vine.co twitter: https://www.youtube.com https://platform.twitter.com https://upload.twitter.com https://s-static.ak.facebook.com https://4337974.fls.doubleclick.net 'self' https://donate.twitter.com; img-src https://graph.facebook.com https://*.giphy.com https://twitter.com https://*.twimg.com https://ad.doubleclick.net data: https://lumiere-a.akamaihd.net https://fbcdn-profile-a.akamaihd.net https://www.facebook.com https://ton.twitter.com https://*.fbcdn.net https://syndication.twitter.com https://media.riffsy.com https://www.google.com https://stats.g.doubleclick.net https://api.mapbox.com https://www.google-analytics.com blob: 'self'; report-uri https://twitter.com/i/csp_report?a=NVQWGYLXFVZXO2LGOQ%3D%3D%3D%3D%3D%3D&ro=false;
https://goo.gl/wSH6sV
https://srihash.org/
https://goo.gl/yxEJiO https://goo.gl/IrPX7b
Set-Cookie: user_session=...; path=/; secure; HttpOnly; SameSite=Lax
https://goo.gl/QcZIBI
✘ Set-Cookie: __Host-SID=12345; Secure; Path=/ ✘ Set-Cookie: __Host-SID=12345 ✘ Set-Cookie:
__Host-SID=12345; Secure ✘ Set-Cookie: __Host-SID=12345; Secure; Path=/subdirectory/ ✘ Set-Cookie: __Host-SID=12345; Domain=example.com ✘ Set-Cookie: __Host-SID=12345; Domain=example.com; Path=/ ✘ Set-Cookie: __Host-SID=12345; Secure; Domain=example.com; Path=/ ✘ Set-Cookie: __Secure-SID=12345; Secure; ✘ Set-Cookie: __Secure-SID=12345
https://goo.gl/gF2clJ
https://goo.gl/FHAeAm
Credential Management API @ I/O: https://goo.gl/FbrO5x navigator.credentials.get({ "password": true, "unmediated":
true }) .then(c => { if (!c) return; // Hooray, we have a credential! signInToYourApplication(c); });
Credential Management API @ I/O: https://goo.gl/FbrO5x function signInToYourApplication(c) { fetch("/signin",
{ "method": "POST", "credentials": c }) .then(r => { if (r.status == 200) { renderSignedInExperience(r); // or: window.location = "/signedin"; } else { renderUsefulErrorMessage(); } }); }
None
https://goo.gl/Un07eJ
https://goo.gl/ILUP12
https://goo.gl/eZ9SKg
scheme://host:port
scheme://host:port scheme://sub1_host:port scheme://sub2_host:port
https://goo.gl/VhLsq2
None
Thank you! https://goo.gl/F0o9kR @mikewest
[email protected]