Even in case you need to oversteer frozen zone rules, follow this guidance (or simply stop :443/udp at your firewall edge), because if your site becomes an amplification hop, your public IP addresses unintentionally might end up on an abuse list - although you‘re NOT compromised! https://t.co/3iyXAH6Z4s

— Thorsten Rood (@ThorstenRood) December 24, 2020

https://t.co/bEyQWePsGB - recommendations if your using DTLS on your Netscaler/ADC due to the ongoing DTLS amplification DDOS attack. NOTE your ADC'a are not compromised!!!

— David Wilkinson (@WilkyIT) December 24, 2020

例のCitrixのやつ結構被害が広がってる

Citrix warns of active DDoS attack targeting its Application Delivery Controllers - SiliconANGLE https://t.co/KdhCW34bjv

— ぴょっ！ (@Pyo0072) December 25, 2020

Blog update: Potentially ongoing worldwide UDP:443 (EDT) DDoS amplify attack against Citrix (NetScaler) Gateway
I updated the blog post with all we currently know and the official Citrix statement CTX289674https://t.co/hypMweylIi
via @xenadmin @citrix #NetScaler

— Marco Hofmann (CTA) (@xenadmin) December 24, 2020

Potentially ongoing worldwide UDP:443 (EDT) DDOS amplify attack against Citrix (NetScaler) Gateway
by ⁦@xenadmin⁩ https://t.co/rEgPMKxBRr

— Thorsten E. (@endi24) December 21, 2020

New Blog post: Potentially ongoing worldwide UDP:443 (EDT) DDOS amplify attack against Citrix (NetScaler) Gatewayhttps://t.co/hypMweylIi
via @xenadmin @citrix #ADC #Gateway #NetScaler #UDP #DDOS #EDT

— Marco Hofmann (CTA) (@xenadmin) December 21, 2020

#CyberAttacks: #Citrix Confirms Ongoing #DDoSattack Impacting #NetScaler ADCs - https://t.co/dzCBEtK6X4@serghei @_DanielWep @BleepinComputer
?#Enterprises #Organizations#SecurityFlaws #DTLS#InfoSec #Vulnerabilities#CyberSecurity #DataPrivacy#InternetSecurity #TLS

— ????????? ??????? ֎ (@Totocellux) December 25, 2020

Citrix confirms ongoing DDoS attack impacting NetScaler ADCs https://t.co/V9YyMKfzpS

— The Cyber Security Hub™ (@TheCyberSecHub) December 24, 2020

#Citrix ADCs may face Datagram TLS (DTLS) Amplification DDoS attacks, possibly leading to outbound bandwidth exhaustion. Outbound traffic should be monitored ? for anomalies/peaks. Update expected on 2021-01-12. Check https://t.co/RMEXeFPkwV for details & temporary mitigation. pic.twitter.com/x2LmTCDfaL

— CERT-Bund (@certbund) December 25, 2020

https://t.co/bEyQWePsGB - recommendations if your using DTLS on your Netscaler/ADC due to the ongoing DTLS amplification DDOS attack. NOTE your ADC'a are not compromised!!!

— David Wilkinson (@WilkyIT) December 24, 2020

【ニュース】
・Citrix製品のDTLSプロトコルを用いたDDoS攻撃が、「Steam」や「Xbox」などのオンラインゲームサービスに対して行われている模様。
・Citrixは2021年2021年1月12日にパッチを出すとのことhttps://t.co/wMdJdqwZje

— LokiBlog (@BlogLoki) December 24, 2020

Citrix published an article on the DTLS Amplification Attack: Threat Advisory - DTLS Amplification Distributed Denial of Service Attack on Citrix ADC https://t.co/x2NNzBzD3a #NetScaler #CitrixADC

— Anton van Pelt (@AntonvanPelt) December 24, 2020

This! => https://t.co/dLTwlK3Y76

— Sacha Thomet (@sacha81) December 24, 2020

#Citrix Threat Advisory for DTLS Amplification DDoS attack on ADC Appliances - https://t.co/SKeRgjgKpK

— George Spiers (@JGSpiers) December 24, 2020

#Citrix #CitrixADC #vulnerability

action required?????

Threat Advisory - DTLS Amplification Distributed Denial of Service Attack on Citrix ADChttps://t.co/JHECeb6jvP

— Thomas Poppelgaard (@_POPPELGAARD) December 24, 2020

Citrix has issued an emergency advisory warning its customers of a security issue affecting its NetScaler application delivery controller (ADC) devices that attackers are abusing to launch amplified distributed denial-of-service (DDoS) attacks.https://t.co/puaWl6KDmp

— Tom?\(^-^)/ (@TomLawrenceTech) December 25, 2020

⚠️WARNING — Hackers are abusing a weakness in #Citrix NetScaler devices to launch amplified ?#DDoS attacks against several targets.

➤ https://t.co/LLCrDyrtAO

Affected Citrix customers can temporarily disable DTLS to stop the attack.#infosec #sysadmin

— Anonymous??️ ?? (@YourAnonRiots) December 25, 2020

? WARNING — Hackers are abusing a weakness in #Citrix NetScaler devices to launch amplified ? #DDoS attacks against several targets.

Read details ➤ https://t.co/QubTq0rsVj

Affected Citrix customers can temporarily disable DTLS to stop the attack.#infosec #sysadmin

— Wang Wei (@security_wang) December 25, 2020

? WARNING — Hackers are abusing a weakness in #Citrix NetScaler devices to launch amplified ? #DDoS attacks against several targets.

Read details ➤ https://t.co/uUIzN2NRRV

Affected Citrix customers can temporarily disable DTLS to stop the attack.#infosec #sysadmin

— Mohit Kumar (@unix_root) December 25, 2020

Citrix devices are being abused as DDoS attack vectors https://t.co/hB6ZKLr7uh #cybersecurity #security pic.twitter.com/RsHu2qgpd2

— Moix Security (@moixsec) December 24, 2020

Citrix devices are being abused as DDoS attack vectors

-Citrix says it's working on a fix, expected next year
-amplification factor via Citrix devices appears to be 35, based on current data, far above the 4-5 of normal DTLS DDoS attackshttps://t.co/f30AxA2Fyt pic.twitter.com/DceaSPbvud

— Catalin Cimpanu (@campuscodi) December 24, 2020

Citrix devices are being abused as DDoS attack vectors#cybersecurity #phishing #malware #Infosec #cyberthreats #ramsomware #hacking #databreach#dataprotection #privacy #dataleak #cyberattacks https://t.co/R2oROJOymK pic.twitter.com/AmMFex60Py

— Paula Piccard ?? ?? (@Paula_Piccard) December 25, 2020

Citrix devices are being abused as DDoS attack vectors https://t.co/rzkqkUoqpO by @campuscodi

— ZDNet (@ZDNet) December 24, 2020

Citrix devices are being abused as DDoS attack vectors #Cybersecurity #infosec #security https://t.co/AQlSTCIXsT

— Bob Carver ✭ (@cybersecboardrm) December 24, 2020

@Citrix has confirmed that an ongoing #DDoS attack pattern' using #DTLS as an amplification vector is affecting #Citrix Application Delivery Controller (ADC) networking appliances with EDT enabled. ⁦@dynamicCISO⁩ #GirlsWhoCode https://t.co/2eMCgsK2FF

— rneelmani (@rneelmani) December 26, 2020