Authoritative NASA sources contradict the universal claim: Venus has no global magnetic field, and Mars has no global magnetic field today, although Mars retains localized crustal magnetic fields. The claim is therefore false as stated.

Chapter 1: The Solar System - NASA Science

NASA Investigates Invisible Magnetic Bubbles in Outer Solar System - NASA

Millennium of Geomagnetism: Magnetism of other planets

Science & Environment

Mars and the Earth's moon have localized regional magnetic fields at different places across their surfaces, but no global field.

But not all magnetospheres are created equal: Venus and Mars do not have magnetospheres at all, while the other planets — and one moon — have ones that are surprisingly different.

Venus was found to be unmagnetized: the solar wind is only stopped by its upper atmosphere, the Venus ionosphere, creating a completely different type of magnetosphere, more like a comet tail.

All planets have a magnetic field

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