HostNexFlow › Is Unibot safe
Is Unibot safe?
Unibot is the bot that invented the category — and the venue with the largest documented user refund in its history. Its October 2023 exploit ($640K across ~600 wallets, through an approval-layer bug) and the $1.78 million reimbursement that followed are the most instructive record in this family: the failure wasn't the held key, and the response set a bar no rival has exceeded.
What Unibot is
Unibot is the original Telegram trading bot — launched 2023, first to make 'paste a contract in chat, get a signed swap in seconds' a mainstream flow on Ethereum. The product shape it pioneered is now the category template: bot-managed wallets, one-tap buys and sells, sniping, copy trading, limit orders, a UNIBOT token sharing platform revenue with holders. Several later teams came out of Unibot's orbit — most of the bot family, Trojan included, is downstream of its feature list. Its 1% per-trade fee was the number every competitor priced against.
Why the original still matters
Unibot's position in 2026 is the elder of the family: not the largest by volume (Maestro's $12.8B dwarfs it), not the flashiest (Banana Gun's sniper owns the launch meta), but the one whose product choices everyone inherited — the managed-wallet model, the chat-command UX, the 1% convention, the revenue-sharing platform token. Several of today's venues were built by people who learned the trade on Unibot's user base or inside its team; the 'Trojan is ex-Unibot' detail repeated across the space is the clearest genealogy line. That history matters to the safety question because it means Unibot's design decisions have the longest stress-test in the category — including the one that failed.
October 31, 2023 — the exploit, precisely
One week after the same vulnerability class hit Maestro's router (October 24 — CertiK documented both), Unibot's newly deployed order router was exploited through a call-injection vulnerability: an unverified contract function accepted attacker-crafted input and executed arbitrary external calls. The weaponized call was transferFrom — the attacker directed the router to move tokens out of the wallets of users who had previously approved the contract to trade for them. ~355.5 ETH, about $640,000, across ~600 wallets. Proceeds were swapped on Uniswap and pushed through Tornado Cash. Unibot suspended the router, revoked the exposed permissions, and posted the line that mattered: 'Your keys and wallets are safe' — the bug was in the contract layer, not the key store.
The refund that set the family standard
What happened next is the reason this page reads differently from a hit piece: Unibot spent $1.78 million compensating ~$600K in losses. The published refund mechanics: market-buyback and in-kind return for 141 of 164 affected tokens (86% of the set); full token recovery for JOE (the largest loss, ~$370K), DAVID, AIX, MSTR, BCAT, TISM and CHAINS; a 50% ETH-value bonus for tokens that had crashed during the wait; ETH-at-exploit-value refunds plus a 20–35% bonus for tokens too illiquid to buy back; ten days of 0% fees after resumption; and holder revenue share raised from 2% to 3%. Overcompensating a loss by ~3x and documenting the mechanics publicly is the strongest post-incident signal a venue can send — stronger than any 'never hacked' claim, because it's evidence of both the capability and the will to absorb the loss.
What the incident actually teaches
| Layer that failed | What it shows |
|---|---|
| Not the key — the approval | Users' held-key wallets weren't cracked; the router contract they'd granted transferFrom rights had an arbitrary-call bug. A bot's attack surface includes every contract it asks you to approve |
| Deployed-fast contracts | The vulnerable router was newly deployed and unverified — upgrade velocity is itself a risk vector; 'new router' is where the exploit lived in both Unibot's and Maestro's cases |
| The refund is the verdict | $1.78M out vs $640K in losses, paid publicly with mechanics disclosed — the cleanest measure of whether a venue can and will absorb a failure |
| Same week, same bug | Maestro's identical approval-vuln exploit ran Oct-24; the category's infrastructure shared the same blind spot — a systemic risk, not a vendor-specific one |
If you use it — the disciplines that apply
The Unibot incident added one discipline the held-key playbooks miss: approval hygiene. Whatever the bot, periodically review the token approvals your wallets have granted its router contracts (revoke.cash or the chain explorer's approval checker) — a stale infinite approval is an open door even if you never trade again. Then the standard set: dedicated bot wallet, float-sized balance, profits swept to keys only you hold, TG account hardened. And the token side stays independent of the venue: /check-token reads the mint before size, the bot-custody playbook generalizes the model, and the clone-handle guide covers the phishing surface every known bot attracts.
The verdict in one line: Unibot is legit, tested, and the family record-holder for making users whole — $1.78M spent covering a $640K approval-layer exploit. Its history is the best argument for using it and the best argument for the float-and-approval disciplines every bot still requires.
Frequently asked
Is Unibot a legitimate trading bot?
Yes — Unibot is the bot that started the category: launched in 2023, it was the first widely-used Telegram trading bot on Ethereum and the template every rival (Trojan, Banana Gun, Maestro) later copied, down to the feature list. It also carries the family's most instructive incident record: a documented October-2023 exploit, and the largest user refund any trading venue has ever produced.
What happened in the Unibot exploit?
On October 31, 2023, Unibot's newly deployed router contract was exploited through a call-injection vulnerability (an unverified contract function, 0xb2bd16ab, that accepted attacker-crafted input with no validation). The attacker made the router execute transferFrom on tokens users had previously approved it to spend — draining about 355.5 ETH, roughly $640,000, across ~600 wallets. Stolen funds were swapped on Uniswap and pushed through Tornado Cash.
Did Unibot refund affected users?
Yes — the fullest refund in the bot family. Unibot spent $1.78 million covering ~$600K in user losses: it market-bought and returned 141 of 164 affected tokens (86%), made tokens like JOE, DAVID, AIX, MSTR, BCAT, TISM and CHAINS whole in-kind, paid a 50% ETH bonus on tokens that had crashed during the wait, refunded ETH value +20–35% on illiquid tokens, suspended fees for ten days, and raised holder revenue share from 2% to 3%. The compensation was larger than the loss — the standard every venue since is measured against.
Who holds your keys on Unibot?
The bot, for its managed trading wallets — same held-key model as every Telegram bot. But the October 2023 exploit showed the second custody surface most users miss: the token approvals you grant Unibot's router contract. Even if the held key were perfect, a buggy contract with transferFrom rights can move your approved balances without touching your key at all. That approval layer is the lesson Unibot's incident permanently added to the category's threat model.
How is Unibot different from Banana Gun or Maestro?
All three were exploited — and all three refunded, which is the useful pattern. Unibot's failure was a router-contract approval bug (Oct-2023, $640K, $1.78M refunded); Maestro's was the same approval-vuln class a week earlier (Oct-24, ~$485K, 610 ETH refunded in ~10h); Banana Gun's was a Telegram message-oracle path (Sept-2024, $3M, treasury refund). Different failure surfaces, same conclusion: the layer between your wallet and the chain is where bots break, and incident response is the honest quality signal.
Is Unibot still worth using in 2026?
It remains a real, operating product — the original bot with a surviving user base and a demonstrated treasury-and-willingness to absorb a loss. Whether it's the right tool is a feature comparison (its core loop is now also offered by faster descendants — several Trojan-team members are Unibot alumni), but on the safety question specifically, Unibot carries the strongest possible evidence a venue can offer: it has already been tested by a real exploit and already answered for it at 3x the cost.