The small Jelling stone was vandalized in 1916, when a student at the college struck two letters around. 3 cm long and surrounded by a rectangular frame, approx.5 × 8 cm, on top of the stone. The then superintendent sent a letter to the National Museum of the incident: "Luckily it was in a place where there was a thick cake Low-old, but even after it was distant, was seen both brands for Letters and Frame yet." 

In February 2011 was the great Jelling Stone vandalized. The stone had been painted a word with green spray paint on several of the pages, like a nearby church door and gravestones, and the white box, the stone should be covered in winter.

Conservator Susanne Trudsø from the National Museum has been tasked to try to remove the green paint that is sprayed on the stone. Susanne Trudsø: "What we must strive for is to get the paint - and paint only - of, so we retain the patinalag that the stone naturally."

After that we started using fossil fuels, the old runic been exposed to acid rain and hence slow decomposition. The corrosion that has been on the rocks the last 100 years, perhaps half of what it has been merged for the last 1,000 years. Heritage Agency and the National Museum has concrete plans to build a glass house on the rocks, with control of temperature and humidity inside the the house.

↑ Lisbeth Imer, curator specializing in runologi: http://runer-moenter.natmus.dk/hvad-er-graffiti/

↑ Politiken.dk: Jelling stones ravaged by graffiti