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Bug bounty program

SL

Slack

Open on HackerOneAtlas
Platform
HackerOne
Bounties
Pays
Assets in scope
19
Disclosed reports
133
Subdomains
137,436
Vendor on CyberSIXT
Slack (3 CVEs, 0 exploited)

Most upvoted reports133

All reports
Most upvoted reports of Slack
ReportWeaknessDisclosedBountyVotes
Mass account takeovers using HTTP Request Smuggling on https://slackb.com/ to steal session cookiesAnalysed#737140Injection and Smuggling2020-03-12–870
Remote Code Execution in Slack desktop apps + bonusAnalysed#783877Command and Code Injection2020-08-28–509
XSS vulnerable parameter in a location hashAnalysed#146336Cross-site Scripting2019-10-16–455
URL link spoofingAnalysed#481472Input Validation and Logic2020-04-26$250362
TURN server allows TCP and UDP proxying to internal network, localhost and meta-data servicesAnalysed#333419Server-Side Request Forgery2020-03-12$3,500323
AWS bucket leading to iOS test build code and configuration exposureAnalysed#404822Information Disclosure2019-02-23$1,500321
Slack DTLS uses a private key that is in the public domain, which may lead to SRTP stream hijackAnalysed#531032Cryptography2020-03-12$2,000170
XSS in gist integrationAnalysed#11073Cross-site Scripting2019-04-28$500157
Unauthenticated LFI revealing log informationAnalysed#272578Information Disclosure2018-01-26–123
Stealing xoxs-tokens using weak postMessage / call-popup redirect to current team domainAnalysed#207170Misconfiguration and Insecure Design2017-02-28–120

Subdomains137,436

Root
Scope
Name suggests
First seen
Text file137,436 names
Subdomains of Slack
NameScopeFirst seen
bestcodecs.quip.comIn scope2026-11-14
bestdeal.quip.comIn scope2026-11-14
bestfreecodecs.quip.comIn scope2026-11-14
bestlivecodecs.quip.comIn scope2026-11-14
bestmediacodecs.quip.comIn scope2026-11-14
bestmediafile.quip.comIn scope2026-11-14
bestmediafileinc.quip.comIn scope2026-11-14
bestmediafiles.quip.comIn scope2026-11-14
bestmediafilesinc.quip.comIn scope2026-11-14
bestnewsite.quip.comIn scope2026-11-14
bestonlinebookies.quip.comIn scope2026-11-14
bestplumbersuk.quip.comIn scope2026-11-14
bestselfpropelledlawnmowers.quip.comIn scope2026-11-14
bestseller.quip.comIn scope2026-11-14
bestthiscodecs.quip.comIn scope2026-11-14
bestvideodoorbell.quip.comIn scope2026-11-14
bestway.quip.comIn scope2026-11-14
bet.quip.comIn scope2026-11-14
bet365bingoreview.quip.comIn scope2026-11-14
beta.quip.comstagingIn scope2026-11-14
autoconfig.beta.quip.comstagingIn scope2026-11-14
autodiscover.beta.quip.commail, stagingIn scope2026-11-14
m.beta.quip.comstagingIn scope2026-11-14
webdisk.beta.quip.comstagingIn scope2026-11-14
www.beta.quip.comstagingIn scope2026-11-14
beta1.quip.comstagingIn scope2026-11-14
beta2.quip.comstagingIn scope2026-11-14
beta3.quip.comstagingIn scope2026-11-14
beta4.quip.comstagingIn scope2026-11-14
betaa.quip.comIn scope2026-11-14
betablog.quip.comIn scope2026-11-14
betav2.quip.comIn scope2026-11-14
beth.quip.comIn scope2026-11-14
betty.quip.comIn scope2026-11-14
bewerbung.quip.comIn scope2026-11-14
beyond.quip.comIn scope2026-11-14
bf.quip.comIn scope2026-11-14
bfm.quip.comIn scope2026-11-14
bg.quip.comIn scope2026-11-14
www.bg.quip.comIn scope2026-11-14
bgp.quip.comIn scope2026-11-14
bgr01swd.quip.comIn scope2026-11-14
bgs.quip.comIn scope2026-11-14
bh.quip.comIn scope2026-11-14
bhc.quip.comIn scope2026-11-14
bhm.quip.comIn scope2026-11-14
bhojpur.quip.comIn scope2026-11-14
bi.quip.comIn scope2026-11-14
www.bi.quip.comIn scope2026-11-14
bia.quip.comIn scope2026-11-14
bianca.quip.comIn scope2026-11-14
bib.quip.comIn scope2026-11-14
bible.quip.comIn scope2026-11-14
biblio.quip.comIn scope2026-11-14
biblioteca.quip.comIn scope2026-11-14
www.biblioteca.quip.comIn scope2026-11-14
biblioteka.quip.comIn scope2026-11-14
bibliotheque.quip.comIn scope2026-11-14
bid.quip.comIn scope2026-11-14
big.quip.comIn scope2026-11-14
big12conference.quip.comIn scope2026-11-14
bigbang.quip.comIn scope2026-11-14
bigben.quip.comIn scope2026-11-14
bigbrother.quip.comIn scope2026-11-14
bigdog.quip.comIn scope2026-11-14
bigmac.quip.comIn scope2026-11-14
bigtennetwork1.quip.comIn scope2026-11-14
bigtits.quip.comIn scope2026-11-14
bike.quip.comIn scope2026-11-14
bikini.quip.comIn scope2026-11-14
bilal.quip.comIn scope2026-11-14
bilbo.quip.comIn scope2026-11-14
bilder.quip.comIn scope2026-11-14
bilet.quip.comIn scope2026-11-14
bill.quip.comIn scope2026-11-14
www.bill.quip.comIn scope2026-11-14
bill2.quip.comIn scope2026-11-14
billboardadvertising.quip.comIn scope2026-11-14
billing.quip.comIn scope2026-11-14
autodiscover.billing.quip.commailIn scope2026-11-14
webdisk.billing.quip.comIn scope2026-11-14
www.billing.quip.comIn scope2026-11-14
billing1.quip.comIn scope2026-11-14
billing2.quip.comIn scope2026-11-14
billpay.quip.comIn scope2026-11-14
bills.quip.comIn scope2026-11-14
billy.quip.comIn scope2026-11-14
billyhenderson.quip.comIn scope2026-11-14
bim.quip.comIn scope2026-11-14
bin.quip.comIn scope2026-11-14
binary.quip.comIn scope2026-11-14
bindu.quip.comIn scope2026-11-14
bingo.quip.comIn scope2026-11-14
bio.quip.comIn scope2026-11-14
bioinfo.quip.comIn scope2026-11-14
biologie.quip.comIn scope2026-11-14
biologiquerecherche.quip.comIn scope2026-11-14
biology.quip.comIn scope2026-11-14
biotech.quip.comIn scope2026-11-14
www.biotech.quip.comIn scope2026-11-14

20,412 names are covered by the program's own scope; 7 were first seen this week. Names come from ProjectDiscovery's public Chaos dataset (passive sources: certificate logs, DNS and other public data), matched to the program by its listing and its own domain scope. A name being in a dataset is not permission to test it: only what the program's own scope says is in scope, and its policy decides. CyberSIXT does not resolve, probe or scan these names. Tags come from the name alone. Source: ProjectDiscovery Chaos. Subdomains on the Atlas, or search the subdomains of every program.

A name in a dataset is not permission to test it: the program's own scope and rules decide. Data as of 2026-11-15.

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