BUZZ-Australia's Dourado hits 4-mth high; buys security software company
** Mineral explorer Dourado Resources Ltd gains as much as 27.3 pct to 1.4 Australian cents to hit its highest since April 24
** Company to buy Canada-based data security software developer Zyber Secure Mobile Solutions
** Says Dourado will issue 700 mln convertible shares, each exchangeable for one fully paid ordinary Dourado share
** Adds that co plans to conduct a capital raising under a full form prospectus to raise at least A$3 mln ($2.1 mln)
** About 69.8 mln shares change hands in early trading on Wednesday, compared with the 30-day average of 9.2 mln
** Stock had lost about 63.3 pct this year as of Tuesday's close ($1 = 1.4298 Australian dollars) (Reuters Messaging: email@example.com)
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