An attachment is taking a person's property to satisfy a court-ordered debt.
When assets are in controversy at in a civil lawsuit, a plaintiff may request a writ of attachment, asking the Court to either (1) seize or (2) take note of certain assets, to be exchanged at the successful conclusion of a lawsuit.
Sometimes attachment impounds attached assets. Attachment of certain assets or properties may require a hearing prior to attachment. For example, a court will rarely attach & immobilize wages without a prior hearing. Anything less is a deprivation of due process of law.