Is downloading legal? The answer depends on its original license. No evidence suggests Leszabo was open-source; it was likely freeware or closed-source shareware. Under the DMCA and similar international laws, downloading abandonware occupies a gray area. Most rights holders no longer enforce copyright on 15-20 year old utilities, but you should:

Developers have integrated updated security protocols to ensure that the software remains "secure and proven" for users who need a stable environment.