Crypto is evolving at a remarkable pace. Some of the most talented developers in the world are building new financial products that challenge decades-old assumptions about how money, ownership, and access should work. Decentralized exchanges, lending and borrowing protocols, structured yield products, on-chain derivatives, tokenized real-world assets, and private investment vehicles are emerging almost daily.
What makes this ecosystem so powerful is that it is permissionless. Anyone, anywhere in the world, can build an application, deploy it to a blockchain, and make it available globally without asking for approval. This openness is crypto’s defining strength, but also the reason why users must approach it with awareness and care.
These applications are commonly referred to as dApps, or decentralized applications. Unlike traditional software, dApps are not hosted by a single company or controlled by a central server. Instead, they run on smart contracts deployed on blockchains, and users interact with them directly using their crypto wallets. Understanding how these interactions work, and the risks they introduce, is essential for anyone serious about holding and using digital assets.
How dApps Work and Why They Exist
Interacting with a dApp is fundamentally different from interacting with a traditional website. In the traditional world, users create accounts, log in with an email and password, and trust the service provider to safeguard their data and assets. In crypto, your wallet replaces your username and password.
When you connect a wallet to a dApp, you are not creating an account in the traditional sense. You are cryptographically proving ownership of an address and authorizing the dApp to interact with that address according to the permissions you grant.
Once connected, your wallet acts as a key and whoever controls the wallet controls everything linked to it, for example:
- It allows you to view your balances and positions within the dApp.
- It enables you to perform actions such as swaps, deposits, borrows, or claims.
- It gives access to any assets associated with that wallet inside the dApp.
This design eliminates intermediaries and custodians, but it also means responsibility shifts entirely to the user. It is sometimes argued that dApps exist because wallets are “not functional enough.” If wallets could do everything, there would be no need to leave them.
We believe this argument misses the point. If smartphones only allowed users to access apps built by Apple or Google, the mobile experience would be far poorer than it is today. Innovation thrives when developers across the world can experiment, build, and compete. Crypto is no different. A single wallet team, even a very good one, cannot anticipate or build every possible financial product users may want. The richness of crypto comes from its openness to external innovation.
There are also economic reasons to use dApps. Even though Bron aggregates multiple solvers and makes them compete to deliver tight pricing to the user, there will always be cases where a specialized dApp offers:
- Better execution
- A feature not yet supported natively
- Access to early-stage or niche opportunities
Interacting with dApps is not a weakness of crypto. It is its reason for being. One should interact with caution, though.
The Hidden Risk: Permissions and Power of Attorney
This freedom of interaction with dApps comes at cost, one that many users do not fully understand. When you interact with a dApp that needs to move tokens from your wallet, such as a decentralized exchange or lending protocol, you must grant it permission to do so. This permission is called an allowance. You may have noticed that when swapping tokens, you often sign two transactions:
An approval (allowance)
The actual swap
The approval is effectively a power of attorney granted to the dApp’s smart contract. Here is the part that surprises most people: That approval is usually unlimited by default.
Yes, unlimited.
If you hold $10 million worth of USDT in a wallet and approve a decentralized exchange to swap $1,000, the default approval often allows that exchange to withdraw up to the entire balance of your USDT from that wallet. Not $1,000. Not $10,000. All of it.
This is not always the case, but it is very often the default behavior.
“But My Funds Are in a Cold Wallet”
At this point, many users pause and ask the obvious question: “My funds are in a cold wallet. How can this be dangerous?”
That’s exactly the problem. Cold storage protects you from private-key compromise. It does not protect you from permissions you willingly grant.
If you approve a contract while your assets sit safely in cold storage, that contract retains its authority indefinitely, until you explicitly revoke it. This is not a design flaw in a single protocol. It is how ERC-20 tokens work and many users only learn about this mechanism after something goes wrong.
What Happens If a Trusted dApp Is Hacked?
Most dApps are built by honest, capable teams. The majority are not malicious, and their developers have no intention of stealing user funds. But honesty does not eliminate risk.
What happens if:
- A widely used protocol is hacked?
- A dependency is compromised?
- An upgrade mechanism is abused?
- A trusted router contract becomes exploitable?
If you granted that protocol an unlimited allowance, even months or years ago, a malicious actor can use it to pull funds directly from your wallet. Yes, even from your cold wallet.
This is not hypothetical. Some of the largest losses in crypto history occurred via this exact vector:
- BadgerDAO (2021): Users lost over $120 million after approvals were abused through a compromised front end.
- Harvest Finance (2020): Exploits leveraged approval mechanics to drain user funds.
- Various phishing and router exploits: Where users unknowingly approved malicious contracts that later drained balances.
The common pattern is simple: old approvals + unexpected compromise = catastrophic loss.
A Painful Traditional Advice
The standard security advice in crypto is well-intentioned but cumbersome:
Keep long-term assets in a cold wallet.
Use a separate hot wallet for dApp interactions.
Move funds between wallets for every action.
Periodically visit third-party tools to review and revoke approvals.
This approach works, but it is inconvenient, error-prone, and intimidating. Managing multiple wallets, seed phrases, and external dashboards quickly becomes a burden. Are you disciplined enough to follow? Security improves, but usability suffers. Until now, this trade-off was considered unavoidable. It pissed us off as well, hence, we created Bron.
Bron: Crypto Without Fear
At Bron, we believe the compromise between security and user experience is unnecessary. We built Bron with a simple principle in mind: security and usability should reinforce each other, not compete.
Bron integrates natively with WalletConnect, allowing you to connect securely to virtually any dApp in the ecosystem. Connecting is straightforward: select Bron from the wallet list and confirm using biometrics. Once connected, you remain in control.
Every approval you grant, every power of attorney you issue, is visible inside your wallet in the Spending Caps tab. There is no need to visit third-party websites, decode technical jargon, or remember what you signed months ago.
From within Bron, you can:
- Review all active approvals
- Understand them in clear, human-readable language
- Revoke them instantly
Bron acts as your control center for dApp permissions. You are never left guessing who can access your assets or how much they can access. Bron exists to make sure you don’t have to choose between innovation and peace of mind.
With clear visibility, intuitive controls, and security built into the core experience, interacting with the decentralized world becomes what it should be: powerful, flexible, and safe.
This is crypto without fear. This is Bron.
Disclaimer: This article is provided for general informational purposes only and does not constitute financial, investment, accounting, tax, or legal advice. Bron is a self-custodial software wallet that provides tools for interacting with blockchain networks and decentralized applications; it does not provide brokerage, advisory, tax, legal, or compliance services. Interacting with decentralized applications involves inherent operational, technical, and security risks, including risks arising from smart-contract behavior, protocol vulnerabilities, user configuration, social engineering, or third-party compromise. Users remain solely responsible for understanding the permissions they grant, monitoring their activity, and evaluating the risks associated with digital assets.
