They were removed for the GotY edition, however.

In unpatched editions of the game, Hecerinde is a restocking vendor for the Secret Master variety of lockpicks and probes, tools which cannot be found anywhere else.

Have Sugar-Lips speak to me to arrange the petty details.'

'As I said, I will help secure the South Wall.

Tell Sugar-Lips that I am at her service.' I will certainly help you secure the South Wall.

'I must admit I've been negligent towards the Guild.

Of what use is that to you?' (Available only while the related quest is active, after asking Sugar-Lips Habasi about South Wall.)

security: 'I have some knowledge of this.

Altmer: 'I am one of the few here in Balmora.

Master of Security: Help Habasi find the security master in town.

Aside from his natural weaknesses to fire, frost, shock and magicka, his natural bonus to magicka, and resistance to disease, Hecerinde knows the following spells: Wild Earwig, Dire Noise, Silence, Medusa's Gaze, Hide, Invisibility, Shadow Weave, Summon Ancestral Ghost, Bound Shield, Bound Boots, Bound Gauntlets, Bound Helm, Bound Cuirass, and Saintly Word. He carries a steel tanto, expensive shoes, and 12 pieces of gold. He wears an extravagant shirt, common pants, and netch leather greaves with matching boots. He only provides these services to fellow Thieves Guild members ranked Blackcap or above. He also buys and sells Thieves Tools, though he initially does not have any in stock in most versions of the game (see notes). He is the master trainer in Security, and also offers training in Acrobatics (66) and Sneak (66). He is a Captain in the Thieves Guild, and one of the most skilled at his craft. Hecerinde is a High Elf agent who lives in his house on the east bank of the Odai River in Balmora.

Morrowind master of security