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East German espionage raised GDP by 7.4% in late 1980s, study finds

By Thomson Reuters Sep 27, 2026 | 1:33 AM

By Maria Martinez and Rene Wagner

BERLIN, Sept 27 (Reuters) – East Germany’s extensive Cold War economic espionage in the 1970s and ​1980s lifted its overall economic output ‌by 7.4% at the end of the 1980s, according to a study by the Rockwool Foundation Berlin, seen by Reuters on Sunday.

Here are some more details:

• ‌Industrial ​value added was 22.3% ⁠higher due to espionage, ⁠equivalent to 20.2 billion East German marks, or €4.1 billion ($4.7 billion) in 2020 prices. All estimates refer to 1988, the year before ​the Berlin Wall fell.

• Co-author Adrian Lerche said the findings had present-day relevance as ⁠governments tighten export controls, ⁠screen foreign investment and seek to ​protect strategic technologies.

• The Stasi, East Germany’s sprawling ​intelligence service, helped companies obtain scientific and ‌technical information from Western businesses and research institutions. Firms receiving useful intelligence recorded faster productivity growth, invested more and concentrated more on ⁠core products.

• “Stasi espionage strengthened East Germany’s position within the socialist bloc,” said Albrecht Glitz, co-author of the ⁠study. “It did ‌not, however, significantly improve success ⁠in Western markets.”

• The gains also ​spread ‌through supplier and customer networks, ​supporting broader ⁠economic effects, the researchers said. Each additional valuable piece of information produced an estimated annual return of about €330,000 in 2020 prices.

($1 = 0.8770 euros)

(Reporting by Maria Martinez and Rene Wagner, editing by ​Thomas Seythal)