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KRACK Attacks: Breaking WPA2

 Generato il Marzo 06 2026 21:50 PM

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Title

KRACK Attacks: Breaking WPA2

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Description

This website presents the Key Reinstallation Attack (KRACK). It breaks the WPA2 protocol by forcing nonce reuse in encryption algorithms used by Wi-Fi.

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Keywords

WPA2, KRACK, key reinstallation, security protocols, network security, attacks, nonce reuse, handshake, packet number, initialization vector, Mathy Vanhoef

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Headings

H1 H2 H3 H4 H5 H6
1 7 38 0 0 0
  • [H1] Key Reinstallation Attacks
  • [H2] Breaking WPA2 by forcing nonce reuse
  • [H2] Introduction
  • [H2] Demonstration
  • [H2] Details
  • [H2] Paper
  • [H2] Tools
  • [H2] Q&A
  • [H3] Discovered by Mathy Vanhoef of imec-DistriNet, KU Leuven, 2017
  • [H3] Key reinstallation attacks: high level description
  • [H3] Key reinstallation attacks: concrete example against the 4-way handshake
  • [H3] Practical impact
  • [H3] Android and Linux
  • [H3] Assigned CVE identifiers
  • [H3] Addendum: wpa_supplicant v2.6 and Android 6.0+
  • [H3] Addendum: other vulnerable handshakes
  • [H3] Selected errata
  • [H3] Citation example and bibtex entry
  • [H3] Is there a higher resolution version of the logo?
  • [H3] Do we now need WPA3?
  • [H3] Should I change my Wi-Fi password?
  • [H3] I'm using WPA2 with only AES. That's also vulnerable?
  • [H3] You use the word "we" in this website. Who is we?
  • [H3] Is my device vulnerable?
  • [H3] What if there are no security updates for my router or access point? Or if it does not support 802.11r?
  • [H3] Is it sufficient to patch only the access point? Or to patch only clients?
  • [H3] Can we modify an access point to prevent attacks against the client?
  • [H3] How did you discover these vulnerabilities?
  • [H3] The 4-way handshake was mathematically proven as secure. How is your attack possible?
  • [H3] Some attacks in the paper seem hard
  • [H3] If an attacker can do a man-in-the-middle attack, why can't they just decrypt all the data?
  • [H3] Does an attacker to have be near your network in order to attack it?
  • [H3] Are people exploiting this in the wild?
  • [H3] Should I temporarily use WEP until my devices are patched?
  • [H3] Will the Wi-Fi standard be updated to address this?
  • [H3] Is the Wi-Fi Alliance also addressing these vulnerabilities?
  • [H3] Why did you use match.com as an example in the demonstration video?
  • [H3] How can these types of bugs be prevented?
  • [H3] Why the domain name krackattacks.com?
  • [H3] Did you get bug bounties for this?
  • [H3] How does this attack compare to other attacks against WPA2?
  • [H3] Are other protocols also affected by key reinstallation attacks?
  • [H3] When did you first notify vendors about the vulnerability?
  • [H3] Why did OpenBSD silently release a patch before the embargo?
  • [H3] So you expect to find other Wi-Fi vulnerabilities?
  • [H3] Where can I learn more about key reinstallation attacks?

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Anchor Type Juice
Mathy Vanhoef Externo Passing Juice
imec-DistriNet Externo Passing Juice
Intro Interno Passing Juice
Demo Interno Passing Juice
Details Interno Passing Juice
Paper Interno Passing Juice
Tools Interno Passing Juice
Q&A Interno Passing Juice
database of CERT/CC Externo Passing Juice
Computer and Communications Security (CCS) Externo Passing Juice
Black Hat Europe Externo Passing Juice
we have a follow-up paper Interno Passing Juice
see below for more info Interno Passing Juice
non-browser software Externo Passing Juice
Apple's iOS and OS X Externo Passing Juice
Android apps Externo Passing Juice
Android apps again Externo Passing Juice
banking apps Externo Passing Juice
VPN apps Externo Passing Juice
keystream Externo Passing Juice
English text can still be decrypted Externo Passing Juice
hijack TCP connections Externo Passing Juice
adopted at a high rate Externo Passing Juice
50% of Android devices Externo Passing Juice
CVE-2017-13077 Externo Passing Juice
CVE-2017-13078 Externo Passing Juice
CVE-2017-13079 Externo Passing Juice
CVE-2017-13080 Externo Passing Juice
CVE-2017-13081 Externo Passing Juice
CVE-2017-13082 Externo Passing Juice
CVE-2017-13084 Externo Passing Juice
CVE-2017-13086 Externo Passing Juice
CVE-2017-13087 Externo Passing Juice
CVE-2017-13088 Externo Passing Juice
vulnerability note VU#228519 Externo Passing Juice
Key Reinstallation Attacks: Forcing Nonce Reuse in WPA2 Externo Passing Juice
Computer and Communications Security (CCS) Externo Passing Juice
These scripts are available on github Externo Passing Juice
Is there a higher resolution version of the logo? Interno Passing Juice
Do we now need WPA3? Interno Passing Juice
Should I change my Wi-Fi password? Interno Passing Juice
I'm using WPA2 with only AES. That's also vulnerable? Interno Passing Juice
You use the word "we" in this website. Who is we? Interno Passing Juice
Is my device vulnerable? Interno Passing Juice
What if there are no security updates for my router or access point? Or if it does not support 802.11r? Interno Passing Juice
Is it sufficient to patch only the access point? Or to patch only clients? Interno Passing Juice
Can we modify an access point to prevent attacks against the client? Interno Passing Juice
How did you discover these vulnerabilities? Interno Passing Juice
The 4-way handshake was mathematically proven as secure. How is your attack possible? Interno Passing Juice
Some attacks in the paper seem hard Interno Passing Juice
If an attacker can do a man-in-the-middle attack, why can't they just decrypt all the data? Interno Passing Juice
Does an attacker to have be near your network in order to attack it? Interno Passing Juice
Are people exploiting this in the wild? Interno Passing Juice
Should I temporarily use WEP until my devices are patched? Interno Passing Juice
Will the Wi-Fi standard be updated to address this? Interno Passing Juice
Is the Wi-Fi Alliance also addressing these vulnerabilities? Interno Passing Juice
Why did you use match.com as an example in the demonstration video? Interno Passing Juice
How can these types of bugs be prevented? Interno Passing Juice
Why the domain name krackattacks.com? Interno Passing Juice
Did you get bug bounties for this? Interno Passing Juice
How does this attack compare to other attacks against WPA2? Interno Passing Juice
Are other protocols also affected by key reinstallation attacks? Interno Passing Juice
When did you first notify vendors about the vulnerability? Interno Passing Juice
Why did OpenBSD silently release a patch before the embargo? Interno Passing Juice
So you expect to find other Wi-Fi vulnerabilities? Interno Passing Juice
Where can I learn more about key reinstallation attacks? Interno Passing Juice
Yes there is Interno Passing Juice
Darlee Urbiztondo Externo Passing Juice
honorary authorship Externo Passing Juice
author list Externo Passing Juice
division of work Externo Passing Juice
this community maintained list on GitHub Externo Passing Juice
hostapd reuses the ANonce value Externo Passing Juice
hostapd project has such a modification available Externo Passing Juice
see for example Cisco Externo Passing Juice
another paper Externo Passing Juice
ic_set_key Externo Passing Juice
channel-based MitM position Externo Passing Juice
two miles Externo Passing Juice
eight miles Externo Passing Juice
Wi-Fi Alliance Externo Passing Juice
The Wi-Fi Alliance has a plan Externo Passing Juice
all the information these dating websites may be collecting Externo Passing Juice
pleonasm Externo Passing Juice
Wi-Fi Protected Setup (WPS) Externo Passing Juice
WPA-TKIP Externo Passing Juice
CERT/CC Externo Passing Juice
announced an errata on 30 August 2017 Externo Passing Juice
OpenBSD 6.0 Externo Passing Juice
OpenBSD 6.1 Externo Passing Juice
LiveOverflow has an excellent video explaining the attack Externo Passing Juice
Computerphile also made a video about the attack Externo Passing Juice
Matthew Green has a good blog post about KRACK and the causes of the vulnerability Externo Passing Juice
Mojo Networks has a detailed blog posts on the attacks Externo Passing Juice
Bruce Schneier also briefly discusses the attack Externo Passing Juice
The BCC made a short video explaining the attack, and wrote an article about it Externo Passing Juice
The Wall Street Journal: Significant Flaw Discovered in Wi-Fi Security Protocol Externo Passing Juice
The Guardian: 'All wifi networks' are vulnerable to hacking, security expert discovers Externo Passing Juice
TIME: Everything With Wi-Fi Has a Newly Discovered Security Flaw. Here's How to Protect Yourself Externo Passing Juice
Ars Technica: Serious flaw in WPA2 protocol lets attackers intercept passwords and much more Externo Passing Juice
Ars Technica: How the KRACK attack destroys nearly all Wi-Fi security Externo Passing Juice
The Verge: Wi-Fi security has been breached, say researchers Externo Passing Juice
The Verge: 41 percent of Android phones are vulnerable to 'devastating' Wi-Fi attack Externo Passing Juice
Reuters: Researchers uncover flaw that makes Wi-Fi vulnerable to hacks Externo Passing Juice
Forbes: Update Every Device -- This KRACK Hack Kills Your Wi-Fi Privacy Externo Passing Juice
CNET: KRACK attack: Here's how companies are responding Externo Passing Juice
Creative Commons Attribution 4.0 International License Externo Passing Juice
TEMPLATED Externo noFollow

SEO Keywords

Keywords Cloud

protocol attacks wi-fi handshake client against key attack reinstallation also

Consistenza Keywords

Keyword Contenuto Title Keywords Description Headings
key 43
attacks 39
attack 35
wi-fi 28
handshake 26

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