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An exchange lets you buy or sell crypto. There are two main kinds: centralized exchanges (CEXs) and decentralized exchanges (DEXs). Both let you trade crypto — but how they do it, and who’s in control, is very different.
CEXs are run by companies. You create an account and they provide the space for you to buy and sell crypto — think of them as a bank for digital assets.
DEXs don’t have a company behind them. They’re powered by smart contracts — bits of code that connect traders directly. To use one, you’ll need your own crypto wallet. More on this later.
The technology that powers the blockchain is different from the technology behind exchanges — they’re separate systems. The blockchain records transactions across a network, while exchanges are platforms built on top of that technology.
CEXs hold your crypto for you, making them faster and easier to use with familiar payment methods.
On a DEX, you’re in charge — but also responsible for every step. Both types of exchanges are secure, just in different ways.
Trades on DEXs happen on the blockchain.
CEX transactions happen off-chain, more like a bank’s system, where the company keeps track of who owns what behind the scenes and updates your balance for you.
Centralized exchanges handle security, payments, and support — perfect if you’re new. You can buy crypto using your regular card or bank account, and if something goes wrong, there’s help.
Pressure? Slow down.
Ask someone you trust.
Use official channels to verify.
Sending money? Stop.
Experience matters. Share and report it.
Taking a few extra minutes to PAUSE could prevent a permanent loss.
Scammers rely on speed, pressure, and confusion. They want you to react before you have time to think, verify, or speak to someone you trust.
When something feels urgent, unusual, or too good to be true, take a moment and PAUSE.
This simple five-step framework can help you recognize a potential scam, check whether a request is legitimate, and protect yourself and others before any money or information is lost.
If someone is pushing you to act immediately, slow down.
Scammers often create a false sense of urgency. They may tell you that your account is at risk, that you owe money, that an opportunity is about to disappear, or that something bad will happen unless you act now.
A legitimate organization will give you time to understand what is happening, ask questions, and verify the request.
Pause if you are being told to:
Urgency is one of a scammer’s most reliable tools. You do not need to act on someone else’s timeline.
Before you send money, click a link, download an app, share a password, or provide personal information, speak to someone you trust.
This could be a family member, friend, colleague, caregiver, or someone at your bank.
Scammers often try to isolate people. They may tell you that the situation is confidential, that nobody else will understand, or that speaking to someone could cause you to lose an opportunity.
Those are warning signs.
A second person can help you notice something you may have missed, ask useful questions, or confirm that the request does not make sense.
One conversation can be enough to stop a scam.
Never verify a request using the contact details provided by the person who contacted you.
Instead, end the conversation and independently find the organization’s official contact information.
To verify a request:
Do not click links, call phone numbers, or use email addresses sent to you by the person making the request. Scam websites and phone numbers can look convincing.
If the request is legitimate, the organization will be able to confirm it through its official channels.
Stop immediately if someone asks you to make a payment using an unusual, irreversible, or difficult-to-trace method.
No bank, government agency, police department, technology company, or legitimate business will require you to pay through:
Scammers prefer these payment methods because the money is often difficult or impossible to recover.
They may stay on the phone while you make the payment, give you step-by-step instructions, or tell you what to say if a bank employee asks questions.
That behavior is not normal. It is a major warning sign.
Do not send the money. End the conversation and contact your bank or the relevant organization directly.
A scam attempt is worth talking about, even if no money was lost.
Sharing what happened can help protect your friends, family, colleagues, and community. It can also help organizations identify patterns and prevent the same scam from reaching someone else.
If you lost money or shared sensitive information, report it as soon as possible. Contact your bank, the affected platform, and the appropriate fraud-reporting service.
There is no reason to feel embarrassed. Scammers use sophisticated tactics designed to create fear, trust, excitement, and confusion. Anyone can be targeted.
A close call is worth sharing. A loss is worth reporting.
You are not alone, and speaking up may protect the next person.