Ask Is it a violation to use someone else's work sample in your freelance portfolio without credit?

[Edward22]

Using another person's work in your portfolio without giving credit is something many platforms treat as a serious rule violation. Beyond platform rules, it also raises ethical questions because you are presenting work you did not create as part of your own body of work. Some freelancers do this without knowing it crosses a line. Has anyone here seen this happen on a platform, or have you ever been unsure about what you are allowed to include in your portfolio?