Harry Denley

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37 articles

Harry Denley

How Bad Actors Can Abuse Etherscan to Trick You

security

6 Min Read

How Bad Actors Can Abuse Etherscan to Trick You

Block explorers are often a source of truth... but what if that truth can be falsified?

2021 (the second half) In Review: Crypto Hacks, Scams & Shutdowns

security

8 Min Read

2021 (the second half) In Review: Crypto Hacks, Scams & Shutdowns

The second half of 2021 saw a lot of hacks, scams, and other not-so-good things.

cryptoscamdb

2 Min Read

CryptoScamDB - A New API (And a New Hope)

Updates are coming to CSDB that will more easily protect millions of you.

Do You Trust Links? Well, You Probably Shouldn't.

security

5 Min Read

Do You Trust Links? Well, You Probably Shouldn't.

Scammers know you click links all the time. They've made it dangerous to do so.

NFT

9 Min Read

So You Wanna Build Your Own PFP NFT Project?

A lot of people have been having fun launching their own PFP NFT projects, but this can be tough if you don’t have the knowledge or skill set. We'll help!

scam

6 Min Read

Investigating Twitter Reply Scam Rings

We created a honeypot to capture Twitter bots. There were a lot.

2021 (the first half) In Review: Crypto Hacks, Scams & Shutdowns

security

7 Min Read

2021 (the first half) In Review: Crypto Hacks, Scams & Shutdowns

Nobody is too big to fail. Here are the major incidents of 2021 -- just the first half.

How to Beat an Ethereum Sweeper Script and Recover Your Assets

security

9 Min Read

How to Beat an Ethereum Sweeper Script and Recover Your Assets

Do you send funds that then get drained immediately? You likely have a sweeper on your hands. We can help.

Bad Actors Abusing ERC20 Approval to Steal Your Tokens!

scam

4 Min Read

Bad Actors Abusing ERC20 Approval to Steal Your Tokens!

Be careful with what parameters you call approve() with!

security

9 Min Read

2020 In Review: Major Blockchain/Crypto Security Incidents

After a tumultuous 2019, was 2020 better or worse? Let’s review.

Malicious Crypto Apps are Ramping Up on Google Play

scam

6 Min Read

Malicious Crypto Apps are Ramping Up on Google Play

Some of these apps have thousands of downloads and can fool you into thinking they’re legitimate.

How to Ensure You’re Running the Legitimate Version of MetaMask

4 Min Read

How to Ensure You’re Running the Legitimate Version of MetaMask

A recent attack for $8M has lead to many asking how to protect themselves from similar attacks. This will help.

3 Min Read

HackTheBox: Money Flowz OSINT Challenge

Frank Vitalik needs to do a better job covering their tracks

Working With Binance to Return $10,000 of Stolen Crypto to a Victim

3 Min Read

Working With Binance to Return $10,000 of Stolen Crypto to a Victim

Previously, I was able to return $4k of stolen funds to a user. I recently made another recovery to the tune of over $10k.

4 Min Read

The #TwitterHack Postmortem

Hundreds of millions of users were exposed to crypto scam tweets from compromised Twitter accounts. What happened?

Intercepting and Saving $5,000 Worth of Phished Crypto

5 Min Read

Intercepting and Saving $5,000 Worth of Phished Crypto

This is a special occurrence.

Phishing Campaigns Take Aim at Web3 DeFi Applications

6 Min Read

Phishing Campaigns Take Aim at Web3 DeFi Applications

MakerDAO, Uniswap, Synthetix and have been mimicked in a recent wave of phishing sites.

2020 So Far: Personal Information Dumps and Cryptocurrency

4 Min Read

2020 So Far: Personal Information Dumps and Cryptocurrency

This year is shaping up to be an interesting year in terms of security exploits and domain compromises.

Discovering Fake Browser Extensions That Target Users of Ledger, Trezor, MEW, Metamask, and More

7 Min Read

Discovering Fake Browser Extensions That Target Users of Ledger, Trezor, MEW, Metamask, and More

Using a familiar phishing method to target new brands.

EtherAddressLookup v1.23 Now Available — No More Fake YouTube Live Scams!

4 Min Read

EtherAddressLookup v1.23 Now Available — No More Fake YouTube Live Scams!

The latest update now protects from known YouTube Live trust-trading scams.

2019 In Review: Major Blockchain/Crypto Security Incidents

10 Min Read

2019 In Review: Major Blockchain/Crypto Security Incidents

A look back at some of the crypto hacks, scams, and arrests that happened this past year.

5 Min Read

dApp Key Management: UX and Security

Key management is a big concern in the cryptocurrency industry as keys give you (or someone else if implemented incorrectly) access to…

Nigeria, Indonesia, the US, and Vietnam are among the highest victim rates for crypto scams

6 Min Read

Nigeria, Indonesia, the US, and Vietnam are among the highest victim rates for crypto scams

An analysis of over 100,000 click-throughs to popular crypto scams, via Dune Analytics

Research into trust trading scams on Twitter

6 Min Read

Research into trust trading scams on Twitter

Motivation and Purpose

Disclosure: Key generation vulnerability found on WalletGenerator.net — potentially malicious.

8 Min Read

Disclosure: Key generation vulnerability found on WalletGenerator.net — potentially malicious.

If you have used a private key generated on WalletGenerator.net after August 17, 2018, move your funds immediately to a secure address.

Discovering Fake Trezor, MetaMask, and MyCrypto Android APKs

8 Min Read

Discovering Fake Trezor, MetaMask, and MyCrypto Android APKs

These fake apps will get you if you’re not careful. Always verify at a trusted source.

3 Min Read

Introducing Defiscan.io

Quickly and easily get a snapshot of any #DeFi portfolio.

5 Min Read

Be careful with your KYC documents

Stop handing out your information without doing your due diligence.

6 Min Read

Hunting Huobi Scams

Huobi-related scams aren’t seen very often, but they’re just as dangerous as everything else. Stay alert.

The dangers of malicious browser extensions

5 Min Read

The dangers of malicious browser extensions

Be careful with what you install.

Unique phishing method to look out for: the fullscreen API

4 Min Read

Unique phishing method to look out for: the fullscreen API

Using the browser’s API to fool you into giving up your details.

6 Min Read

The Trust-Trading Scam Kit

Before you read this, REMEMBER NOBODY IS GIVING AWAY FREE MONEY.

Using phishing tools against the phishers- and uncovering a massive Binance phishing campaign.

10 Min Read

Using phishing tools against the phishers- and uncovering a massive Binance phishing campaign.

Jeremiah O’Connor (security researcher at Cisco) forwarded me a domain that has been phishing for Binance logins —…

Dissecting some of the latest cryptocurrency exchange phishkits

6 Min Read

Dissecting some of the latest cryptocurrency exchange phishkits

It’s been about a year since I started taking a major interest in phishing within the cryptocurrency scene, namely Ethereum. During that…

4 Min Read

You need to stop trusting links!

Here’s a walk-through of the popular links that people often fall for.

5 Min Read

Dissecting a HitBTC phishing site

One of our bots recently found a new, relatively sophisticated HitBTC phishing kit. We decided to dissect it.

Following an Ethereum phishing scam down the rabbit hole

4 Min Read

Following an Ethereum phishing scam down the rabbit hole

I was browsing etherscan.io comments recently while hunting for scammers and came across a suspicious account — one with a MyEtherWallet…

MyCrypto is an open-source tool that allows you to manage your Ethereum accounts privately and securely. Developed by and for the community since 2015, we’re focused on building awesome products that put the power in people’s hands.

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