@cryptorover was first to post, at 18:09 UTC on 2026-10-29, flagging a possible Polymarket hack: users reported the frontend may be compromised with assets withdrawn without permission.
[1]← Week of Oct 25Oct 25 – Oct 31 UTC Every claim links to the posts behind it01 02 03 04 05 06 07 08 09 10 11 12 6 posts on X 1 week
Microtrend / Rank 03 / Week of Oct 25 – Oct 31
Polymarket frontend hit by supply-chain attack: drainer hidden in web-performance vendor DebugBear's script
Peak / day9tracked accounts
Peak dayThuOct 29 · busiest day in the panel
Rest of X / peak day—not measured outside the panel
Cited claims12source links retained
Market—no token attached
Attention
Who was talking, day by day
Tracked paneldistinct tracked accounts / day
What happened
On 2026-10-29, @cryptorover was first to flag a "possible Polymarket hack" at 18:09 UTC, reporting users saying the frontend may be compromised and assets withdrawn without permission. @0xngmi said he tracked 2.7m in losses, explaining the attacker hit a company that does web performance tracking whose scripts were being pulled on Polymarket, so every visitor was exposed — and that seeds were safe. @saurav_tweets detailed the mechanism: Polymarket loaded a small script from @DebugBear, someone swapped that file for a wallet drainer with the same name and address, browsers trusted it like Polymarket's own code, and it used logged-in sessions to sell positions and push funds out through Polymarket's own withdrawal system with no password or seed phrase needed. @theunipcs listed it alongside "Binance $6.2 billion back" and a Chainalysis hack in the last 48 hours; @layahheilpern claimed $5.7 billion was drained from Binance; @cryptokemal also noted BYBIT rumors.
Why it matters
This is a third-party supply-chain compromise, not a breach of Polymarket's own contracts or keys: a vendor script (DebugBear's web performance tracking) was swapped for a wallet drainer, so no password or seed phrase was needed and users were exposed simply by visiting the site while logged in. It shows prediction-market and DeFi frontends inherit risk from every analytics/performance script they embed, and it landed the same evening as a wave of Binance-hack claims and an equity selloff that knocked Bitcoin to around $78,200 (per @jrkripto).
Observed reaction
Mostly alarmed but with a technical, not fully panicked tone: @0xngmi downplayed it ("i wouldnt freak out, instead better to set on hands") and stressed seeds are safe, @saurav_tweets wrote an explanatory thread, while @ioachimviju called it "Black Thursday" alongside a Binance hack, @jden_xx pushed back ("binance & polymarket hack not the end"), and @jrkripto framed the hack headlines as a narrative used to push Bitcoin down.
Spread
Where it started and who carried it
- First seen
- Oct 29, 18:09 UTC by @cryptorover
- Accounts
- 4 tracked · 13 elsewhere on X
- Communities
- eth defi (1), base farcaster (1), airdrops farming (1), memecoins solana (1)
- Key accounts
- @saurav_tweets, @theunipcs, @jrkripto, @cryptorover, @0xngmi
Explainability
Evidence register
@0xngmi said he tracked 2.7m in losses from the Polymarket hack and that the attacker hit a company doing web performance tracking whose scripts were pulled on Polymarket, exposing every visitor, while seeds were safe.
[1]@saurav_tweets explained Polymarket got hacked through a speed tracking script: the site loaded a script from @DebugBear, someone swapped the file for a wallet drainer with the same name and address, browsers trusted it like Polymarket's own code, it used logged-in sessions to sell positions and send funds out through Polymarket's own withdrawal system, with no password or seed phrase needed.
[1]@theunipcs listed the Polymarket hack alongside "Binance $6.2 billion back" and a Chainalysis hack as three events in the last 48 hours.
[1]@layahheilpern claimed $5.7 billion had been drained from Binance, calling it the biggest cyber hack in history, alongside the Polymarket hack.
[1]@cryptokemal reported Polymarket hack news in recent hours plus Binance, and said there are rumors about BYBIT as well.
[1]@ioachimviju called it "Black Thursday" referencing Polymarket Hack and Binance Hack and said welcome bear market.
[1]@jden_xx, quote-tweeting Jim Cramer, said the Binance and Polymarket hacks are not the end and "things will rise."
[1]@kais3rp noted the timing alongside the biggest pullback in the stock market and a Hyperliquid announcement.
[1]@da9806152 said many people are posting about the Polymarket hack involving a position hack.
[1]@jrkripto said US markets were collapsing (Google -12%, Amazon -14%, Intel -22% on earnings), that Binance "$2.77 billion hacked" and Polymarket hack news were pushed out, and that Bitcoin was pushed down to $78,200 and was trading around $79,000.
[1]@icesolst contrasted the two incidents: Binance hack via a compromised devops employee laptop, Polymarket hack via a compromised third-party vendor.
[1]Angles
- Technical teardown: how the DebugBear web-performance script was swapped for a wallet drainer under the same name/address, and why session-based drains need no seed phrase — with a checklist for auditing third-party scripts on a dapp frontend.
- Numbers roundup: what is actually confirmed (2.7m tracked by @0xngmi) versus the much larger Binance figures circulating ($6.2B from @theunipcs, $5.7B from @layahheilpern), and how to report unverified figures.
- Contrast frame from @icesolst: Binance attributed to a compromised devops employee laptop vs Polymarket to a compromised third-party vendor — where the real crypto attack surface is in 2026.
- Timeline piece tying 2026-10-29 together: hack headlines plus US equity drops (Google -12%, Amazon -14%, Intel -22% per @jrkripto) and Bitcoin's slide to ~$78,200, and the BYBIT rumor @cryptokemal raised.
Formats in use
- breaking-news alert post
- numbered explainer thread ("here's what happened")
- loss-tracking update with amount
- list/listicle of hacks in the last 48 hours
- quote-tweet reacting to macro voices
- hack-postmortem comparison (devops laptop vs third-party vendor)
Risks
- All hack claims here are unverified social posts; label Binance figures ($6.2B / $5.7B) and the BYBIT rumor as unverified and do not present them as confirmed.
- Attribute the 2.7m loss figure to @0xngmi, not as an official Polymarket statement.
- No price predictions or financial advice, especially around Bitcoin levels cited in @jrkripto's post.
- This is your own product's security event — extra care with tone; do not amplify speculation about users' lost funds beyond what posts state.
- Some posts (e.g. @jrkripto, @cryptokemal) mix hack news with market-narrative claims; keep those separate from confirmed facts.
Observed content
Most-engaged posts
Black Thursday Polymarket Hack Binance Hack Welcome Bear MarketOpen on X →
things will rise ✨️ binance & polymarket hack not the end.Open on X →
Yeah and the timing can't be a coincidence, waiting for the biggest pullback in stocks market, hyperliquid announcement, and polymarket hack...Open on X →
Polymarket hack I think many people post about this same this about position hackOpen on X →
here’s what happened in the polymarket hack: > polymarket just got hacked through a speed tracking script. > polymarketdotcom loaded a small script from @DebugBear, a company that checks how fast websites run > someone swapped that file for a wallet drainer. same name, same adOpen on X →
in the last 48 hours alone: - Binance $6.2 billion back - Polymarket hack - Chainalysis (the firm that top crypto organizations use to track crypto hackers) hack yet we'll still have people saying we got lucky when we start flashing the PNLs in a few months/years' timeOpen on X →
History