Can Smart Contracts Be Trusted? What You Should Know

Based on 6 web sources and a video by Simply Explained. TechFeedWatch is not affiliated with the creator, and all rights to the video remain theirs.

Smart contracts run code automatically on a blockchain, but they cannot be trusted blindly. Software bugs, oracle tampering, and stolen keys cause billions of dollars in losses each year. Before committing funds, users must verify security audits, protocol governance, and real legal protections.
AI-generated illustration: Can Smart Contracts Be Trusted? What You Should Know

Smart contracts (self-executing digital agreements stored on a blockchain) cannot be trusted blindly. They are only as reliable as the humans who write their underlying code.

A blockchain (a shared digital ledger) executes instructions exactly as written without human interference. Still, coding errors and stolen administrator keys regularly lead to catastrophic financial losses.

Genuine trust requires third-party security audits (independent code inspections) and real-world testing. It also requires clear legal protections rather than blind faith in automated software.

What Vulnerabilities Undermine Trust in Smart Contracts?

Smart contracts fail when human developers introduce software flaws or design faulty business logic. They also fail when they rely on inaccurate external market feeds.

Automated code executes instructions literally. It cannot judge human intent, question strange orders, or pause itself when a thief drains a pool. If a programmer leaves a backdoor or mathematical error open, anyone can exploit it.

According to cybersecurity non-profit OWASP’s Smart Contract Top 10 (2025), several critical vulnerabilities consistently compromise automated blockchain agreements:

  • Access control flaws that let unauthorized users take ownership of contract functions
  • Price oracle manipulation (tampering with external price data) that tricks the code with fake real-world asset values
  • Logic errors that produce unintended mathematical outcomes during execution
  • Lack of input validation that permits corrupted or harmful data entries
  • Reentrancy attacks (repeated unauthorized withdrawals) and unchecked external calls that drain funds before balances update

Financial criminals exploit these flaws constantly to steal user assets. Immunefi is a blockchain security and bug bounty platform (a service that rewards ethical hackers).

According to the Crypto Losses Q1 2025 Report from Immunefi, malicious exploits and hacks resulted in $1,623,133,800 in lost digital assets. These losses occurred across Web3 platforms (decentralized internet services built on blockchains) during the first quarter of 2025.

Protocol losses accelerated during the following spring months. According to Immunefi’s Crypto Losses April 2025 Report, cumulative crypto ecosystem losses reached $1,742,117,315 through the first four months of 2025.

Decentralized finance protocols are blockchain-based platforms that offer financial services without middlemen. These protocols accounted for 100% of the $92,453,100 lost across 15 separate incidents in April alone.

The table below outlines digital asset losses reported across the ecosystem by Immunefi in their 2025 loss reports:

Reporting PeriodPrimary TargetTotal Losses Reported
First Quarter 2025Web3 Platforms$1,623,133,800
April 2025 (Single Month)Decentralized Finance$92,453,100
Jan through April 2025Entire Crypto Ecosystem$1,742,117,315

According to Immunefi’s H1 2026 threat analysis, severe crypto losses increasingly stem from operational infrastructure failures. They also arise from private key compromises and privileged administrative access weaknesses.

These issues cause more harm than vulnerabilities isolated strictly to smart contract code. When an attacker steals a founder’s private key, the contract behaves as designed while executing theft.

Watch: the video

4 min video. In the video: Simply Explained Shows How Smart Contracts Actually Work

Rigorous Audits and Formal Verification Significantly Reduce Risk

Independent security audits and mathematical verification dramatically improve smart contract safety. They help catch vulnerabilities before developers push code live.

On a standard corporate website, developers can patch an error minutes after launch. Blockchains do not permit simple rollbacks or quick bug fixes after transactions settle.

According to research published by IEEE Xplore applying the NIST Cybersecurity Framework 2.0 to smart contracts, on-chain transactions cannot be reversed. On-chain transactions are records stored directly on a blockchain.

This irreversibility makes post-incident mitigation (repairing damage after a hack) difficult. It requires rigorous pre-deployment protections, such as automated static analysis and formal verification. Formal verification uses mathematical proofs to confirm that code acts only as intended under every conceivable condition.

Static analysis scans software syntax for known security holes without running the code. Bug bounty programs offer cash rewards to ethical hackers who report security flaws privately. While these steps catch obvious defects, audits only reduce risk rather than eliminating it entirely.

Are Smart Contracts Legally Enforceable When Things Go Wrong?

Smart contracts are not automatic legal contracts. Traditional courts treat their enforceability with caution when real-world problems occur.

A written contract represents a mutual meeting of the minds between real people. In contrast, on-chain scripts merely represent computer code designed to move digital tokens.

According to the American Arbitration Association, smart contracts cannot be automatically assumed to be legally enforceable agreements. This uncertainty exists because legal frameworks differ across jurisdictions. Additionally, contracts remain susceptible to inaccurate real-world data inputs from external oracles (services that feed outside data to blockchains).

When an oracle feeds incorrect pricing information to a protocol, the contract completes the transaction anyway. Judges and arbitrators must decide whether that automated execution violates regional contract laws.

A bridge is software that connects different blockchains to transfer assets. A protocol is an automated blockchain application. When a bridge or protocol suffers a catastrophic hack, victims face severe legal hurdles.

Blockchain transactions hide user identities behind pseudonymous wallet addresses. An anonymous software programmer in another hemisphere cannot easily be served with a court summons. Automated enforcement on a ledger rarely translates into restitution inside a local courtroom.

Simply Explained Shows How Smart Contracts Actually Work

Simply Explained demonstrates that smart contracts replace traditional middlemen. They do this by executing simple rules across a distributed network of computers.

He introduced this concept long before developers launched Bitcoin. The video explains that “a smart contract is actually a tiny computer program that is stored inside of a blockchain.”

Simply Explained uses crowdfunding platform Kickstarter as a core example of how this technology changes trust. On Kickstarter, project creators and financial supporters must trust a central company to hold pledges and manage payouts.

A smart contract replaces that intermediary by locking pledged funds until a campaign hits its specific goal. If the campaign succeeds, the code releases funds to the creator. If it fails, the contract refunds supporters automatically.

Simply Explained emphasizes two structural attributes that protect these programs:

  • Immutability: Once created on-chain, nobody can tamper with or rewrite the original code.
  • Distribution: The entire network validates execution, preventing any individual actor from forcing a wrongful payout.

Simply Explained notes that while Bitcoin supports limited scripting, developers build most complex applications on Ethereum. Programmers build Ethereum smart contracts using Solidity, a purpose-built programming language with syntax that resembles JavaScript.

How to Safely Assess Smart Contracts Before Transacting

Users can protect their assets by evaluating a smart contract’s audit history and administrative controls before depositing any funds.

When users approve an unverified transaction, they hand their savings to immutable software. Users must weigh the real benefits and trade-offs of self-custody before moving significant capital. Self-custody means holding and managing digital assets directly without an intermediary.

Evaluate these factors before connecting a wallet to any decentralized application:

  • Verify that reputable cybersecurity firms completed multiple independent audits on the exact deployed code version.
  • Confirm whether administrative upgrades rely on a timelock (a programmed delay before code changes take effect). Check if they use a multi-signature wallet (a digital wallet requiring approval from multiple keyholders).
  • Check third-party tracker sites to see if the protocol holds long-standing, bug-free operational history.
  • Revoke open token allowances (permissions that let a smart contract spend tokens on your behalf) regularly. Doing this ensures compromised contracts cannot drain idle funds from your wallet.

Approach every decentralized protocol with healthy skepticism, and verify its security record. Never deposit more capital than you can afford to lose.

Frequently Asked Questions

What is a smart contract in blockchain?

A smart contract is a self-executing software program stored on a blockchain that runs automatically when predetermined conditions are met. It removes the need for a central middleman to verify and process digital transactions.

What is smart contract auditing?

Smart contract auditing is a systematic review where security professionals inspect code to find bugs, logic flaws, and access control issues before launch. Research in IEEE Xplore shows that static analysis and formal verification are required to catch flaws because transactions cannot be reversed.

How do smart contracts work?

Smart contracts follow simple conditional logic written into blockchain programs: if condition X happens, then execute action Y. When users send data or funds to the program, distributed network nodes validate the transaction and update the ledger.

Sources

Jacob S. Olsen

Jacob S. Olsen

Runs TechFeedWatch, from Denmark

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